Questions on Algebra: Trigonometry answered by real tutors!

Tutors Answer Your Questions about Trigonometry-basics (FREE)

Question 240801: PLEASE HELP ME SOLVE THIS CIRCULAR FUNCTIONS AND THEIR GRAPHS:
A wheel turns 1,500 revolutions per minute.How fast does it turn in radians per second?

Click here to see answer by jsmallt9(3296)

Question 240804: PLEASE HELP SOLVE THIS CIRCULAR FUNCTIONS AND THEIR GRAPHS:
What is the phase shift of F(x)=3 sin (2x-4)?
HERE ARE THE POSSIBLE ANSWERS:
a)2 right
b)2 left
c)4 right
Click here to see answer by jsmallt9(3296)

Question 240829: 2cosA-secA=cosA-(tanA divided by cscA)
Click here to see answer by solver91311(16897)

Question 240790: PLEASE HELP ME SOLVE THIS CIRCULAR FUNCTION AND THEIR GRAPH:
theta is an angle in standard position with T(-20,-21)on terminal ray. Find cos(theta).
HERE ARE THE POSSIBLE ANSWERS:
a)-20/29
b)-21/29
c)21/29
Click here to see answer by Alan3354(30993)

Question 240826: please verify
Click here to see answer by Edwin McCravy(8918)

Question 241041: please help me graph x-4/x^2-x-6
please help graph 2sin(1/4)x
Click here to see answer by Alan3354(30993)

Question 240314: PLEASE HELP ME SOLVE THIS SPECIAL ANGLE:
cot 135(angle)
THIS ARE THE POSSIBLE ANSWERS
a)square root of 3/2
b)square root of 2/2
c)-square root of 2/2
Click here to see answer by Alan3354(30993)

Question 240317: PLEASE HELP ME SOLVE THIS SPECIAL ANGLES
tan 135(degree)
THIS ARE THE POSSIBLE ANSWERS:
a)-1
b)0
c)1
Click here to see answer by Alan3354(30993)

Question 241096: PLEASE HELP ME SOLVE THIS CIRCULAR FUNCTION:
theta is a angle is standard position with T(-20,-21)on its terminal ray.Find csc theta. THIS ARE THE POSSIBLE ANSWERS:
a)-29/20
b)29/20
c)-29/21
Click here to see answer by Alan3354(30993)

Question 241174: I think my problem with these kinds of questions is that I’m having a hard time manipulating the secant, cosine, and so on. For instance, when trying to find the exact value for ‘sec 5π/12’; I know that sec=1/cos and I believe that I’m pretty much set up to use a sum difference identity but don’t think that I can just ...safetly assume that 1/cos=cos and I don’t know if I can honestly say how to change 1/cos into cos so I can use the identity. Also, I want to try my best to finish the rest on my own (that’s why I picked only one question). If anyone has any tips on handling Trig indentities and Trigonometry in general, I’d appreciate the advice. Thanks! ^_^
Click here to see answer by jsmallt9(3296)

Question 241248: PLEASE HELP ME
sin and cos are reciprocal function
this is true or false
Click here to see answer by College Student(505)

Question 241249: Points on the terminal sides of angles play an important part in the design of arms for robots. Suppose the robot's arm can change its length in addition to rotating about the origin in a coordinate plane. If the hand is initially at (12, 12), approximately how many degrees should the arm be rotated and how much should its length be changed to move the hand to (-17, 11)? Please round the first answer to the nearest whole number and the second answer to the nearest hundredth.
I tried and got 258 degrees but I don't think that is correct and I have no idea about what the length should be changed to.
Click here to see answer by Alan3354(30993)

Question 241233: PLEASE HELP ME TO SOLVE THIS PROBLEMS
A spoke of a wheel makes 32 revolutions while the wheel is going 425 feet. Find the diameter of the wheel to the nearest whole number.
THIs ARE THE POSSIBLE ANSWERS:
a)25 ft
b)5 ft
c)14.3 ft

Click here to see answer by checkley77(12569)

Question 240339: how do i solve for problems such as cos of theta= 0.5941 or csc of theta= 3.2191?

Click here to see answer by Alan3354(30993)

Question 241245: the range of y=sin x is all real number from -1 to 1.
this is true or false
Click here to see answer by stanbon(57412)

Question 240319: PLEASE HELP ME SOLVE THIS SPECIAL ANGLES
tan 135(degree)
THIS ARE THE POSSIBLE ANSWERS:
a)-1
b)0
c)1
Click here to see answer by College Student(505)

Question 241241: please help me
The period of y=cos x is 2 pi unit.
THIS IS TRUE OR FALSE

Click here to see answer by rapaljer(4667)

Question 241236: please help me solve this problem:
the value of tan pi/2 is 0.
THIS IS TRUE OR FALSE

Click here to see answer by rapaljer(4667)

Question 241231: PLEASE HELP ME SOLVE TIS CIRCULAR FUNCTIONS AND THEIR GRAPH:
What is the period of y=4 sin 3 x?
HERE ARE THE POSSIBLE ANSWERS:
a)pi/3
b)2pi/3
c)3pi
Click here to see answer by rapaljer(4667)

Question 241302: In /\ ABC, A=35 degrees, a=43, c=20. Determine whether /\ ABC has no solution, one solution, or two solutions. Then solve the triangle. Round to the nearest tenth.
Click here to see answer by stellababy(3)

Question 240366: i cant work out: "calculate the area of the shaded segment?" theres a circle with a wedge with angle 74 degrees and radius 4.6 cm and the shaded segment is the edge between the triangle wedge and the circle so it looks like a half circle?
Click here to see answer by Alan3354(30993)

Question 240387: i need to evaluate the question.5th term of (x-y)7
Click here to see answer by Alan3354(30993)

Question 241424: Cos(x) + 2 = -sec(x)
Click here to see answer by stanbon(57412)

Question 241423: 19sec(x) = 20tan(x) + 12cos(x)
Click here to see answer by jsmallt9(3296)

Question 241425: tan (3x) = -1
Click here to see answer by Alan3354(30993)

Question 241519: (-1/8+1/8i)(4+4i)
Click here to see answer by Alan3354(30993)

Question 241698: simplify the expression:
cos^3(x) + sin^2(x)cos(x)
Click here to see answer by Edwin McCravy(8918)

Question 241753: what is the value of the expression cos-1 (√2\2) ?
Click here to see answer by nerdybill(6963)

Question 241762: find the exact value of sin(3pi/12) using the double-angle identities

Click here to see answer by jim_thompson5910(28598)

Question 241747: what is the value of the expression cos-1 (√2\2) ?
Click here to see answer by jim_thompson5910(28598)

Question 241728: I NEED TO FIND AN ALGORYTHEM TO CALCULATE THE DISTANCE USING DEGREES, MINUTES, SECONDS AND DIRECTON (NORHT, SOUTH, EAST, WEST) I WOULD ASSUME IT WOULD INVOLE CONVERTING TO RADAINS AND USING A TRIG FUNCTION - TANGENT OR COTAN, SIN, COSIN,COSEC (NO), OR CONVERT TO DECIMAL. I'VE GONE BACK TO MY "PRE-CALCULIS" AND MT "CALCULUS & IT'S APPLICATIONS" BOOKS BUT I DO NOT KNOW WHAT TO DO WITH THE DIRECTION BECAUSE THEY DID NOT GET INTO THE "Z" LINE 0R 3RD DIM. QUADRANT. I CANNOT FIND MY OTHER MATH BOOKS OR MECH. ENG. BOOK (I KNOW THAT BOOK HAD IT IN THERE). THAT'S WHEN I CHANGED MAJORS TO PROGRAMMING WHEN I WAS TAKING FORTRN ABOUT THE SAME TIME AND IT HHOOKKEEDD ME BAD. SHOULD'VE GONE INTO NETWORKING THOUGH... ...ANYWAY BACK TO THE SUBJECT CAN YOU HELP ME?
ROBERT

EXAMPLE:
San Antonio 29:25:51N 098:29:36W TO Cairo 30:02:00N 031:17:00E
Click here to see answer by Alan3354(30993)

Question 241830: Solve the problem.
The distance from home plate to dead center field in Sun Devil Stadium is 409 feet. A baseball diamond is a square with a distance from home plate to first base of 90 feet. How far is it from first base to dead center field?
Find the exact value of the expression.
cos-1 (1)
thanks for the help
Gangreo84@yahoo.com

Click here to see answer by stanbon(57412)

Question 241887: e^4-2x=1256
Click here to see answer by Alan3354(30993)

Question 241986: please help me solve this problem:
theta is an angle is standard position with T(-20,-21) on its terminal ray.Find cot theta
HERE ARE THE POSSIBLE ANSWERS:
a)20/21
b)21/20
c)-20/21
Click here to see answer by Alan3354(30993)

Question 241987: Can you help me convert 36 degrees to a radian?
Click here to see answer by Alan3354(30993)

Question 241987: Can you help me convert 36 degrees to a radian?
Click here to see answer by solver91311(16897)

Question 241987: Can you help me convert 36 degrees to a radian?
Click here to see answer by josmiceli(9697)

Question 242004: please help me solve this problem:
A wheel turns 1,500 revolutions per minute.How fast does it turn in radians per second?
HERE ARE THE POSSIBLE ANSWERS:
a)15pi rad/sec
b)30pi rad/sec
c)300pi rad/sec
Click here to see answer by jsmallt9(3296)

Question 241983: please help me solve this problem:
Which of the following equations has amplitude=-2 period=pi/4,phase shift=-pi/2?
THIS ARE THE POSSIBLE ANSWERS:
a)y=-2cos8(x-pi/2)
b)y=-2cos8(x+pi/2)
c)y=-2cos4(x+pi/2)
Click here to see answer by jsmallt9(3296)

Question 241244: PLEASE HELP ME
theta is an angle is standard position with T(-20,-21)
on its terminal ray.Find cot theta.

Click here to see answer by Alan3354(30993)

Question 242238: please help me
For the equation y=sin x, the range is the set of real munbers.
THIS IS TRUE OR FEALSE
Click here to see answer by stanbon(57412)

Question 242240: please help me to graph this:
F(x)=2 sin (2x+pi)
Click here to see answer by stanbon(57412)

Question 242255: please help me
If T is the point at a distance 5pi/4 from P(1,0) on the unit circle with its center at (0,0), in what quadrant does T lie?
HERE ARE THE POSSIBLE ANSWERS:
a)l
b)ll
c)lll
d)lV
Click here to see answer by Alan3354(30993)

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