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Question 135374: (2sinxcosx + cosx - 2sinx - 1)/(-sin(squared)x) = (2 sinx + 1)/(cosx+1)
Please prove one side to equal the other (verify identity). Thank you.
Click here to see answer by kev82(145)

Question 135754: 2 cyclists leave from home and travel in straight lines that form an angle of 27 degrees and 11 minutes. The 1st travels 45.3 miles and the 2nd travels 53.7 miles. When they stop how far apart are they?
**more info if needed
of triangle ABC, C is the hypotenuse. ** not needed.
Click here to see answer by stanbon(26297)

Question 135809: how are we supposed to find a side length in a right triangle if given one more angle and one side of the triangle?
thank you!
Click here to see answer by AlexxsDad(4)

Question 135913: find all exact solutions of the equation:
2sinx+1=0
Click here to see answer by nycsharkman(136)

Question 136157: cos^2xcos^2y+sin^2xsin^2y+sin^2xcos^2y+sin^2ycos^2x=1
Click here to see answer by vleith(1977)

Question 136157: cos^2xcos^2y+sin^2xsin^2y+sin^2xcos^2y+sin^2ycos^2x=1
Click here to see answer by JSmall(7)

Question 136166: Solve:
2sinx+2cosx=sqrt2
Click here to see answer by solver91311(5072)

Question 136169: Solve:8cosxsinx=5
Click here to see answer by longjonsilver(2297)

Question 136549This question is from textbook algebra

: hi i need help with this problem. can you please help me??
If x=0.4 when y=8.25 and y varies inversely with x, which shows y when x =2.2?
thank you so much for your time!!!This question is from textbook algebra

Click here to see answer by stanbon(26297)

Question 136476: These are very confusing for me. Here are a couple, I hope to use these examples to help me solve the rest.
Solve for x,
a) 4cos^2(2x+90)=3, x is in the interval[0,360)
b) If cotx=-3, find the Q2 family member of x in degrees
c) 2sin1/2x=sqrt3 over the interval [0,2pie], keep angle in pie radians
d) 2cos^2x-sinx-1=0, hint, replace cos^2x with one of the pythagorean identities
Click here to see answer by stanbon(26297)

Question 136668: Please assist me in solving the following problem 3^(x+2)=2^(2x-1)

Click here to see answer by vleith(1977)

Question 136926: 1-2cosL+cos2L= ?
L is alpha and please if anyone can explain it to me i would be grateful.
Click here to see answer by stanbon(26297)

Question 136463: 1 + cos x/sin x = cot x/2
can you please help me
Click here to see answer by heraklea(1)

Question 136992: In a right triangle, the length of the longer side is two more than twice the length of the shorter leg. The length of the hypotenuse is 8 more than the length of the shorter leg. Find the lengths of the sides of the triangle.
Click here to see answer by stanbon(26297)

Question 137324: Find the zero of the polynomial function:
f(x) = x to the third power - 6x to the second power + 9x
Click here to see answer by Fombitz(2113)

Question 137327: Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
f(x) = -x squared - 2x - 5
Click here to see answer by oscargut(682)

Question 137325: Find the coordinates of the vertex for the parabola define by the given quadratic function:
f(x) = x to the second power + 8
Click here to see answer by oscargut(682)

Question 137400This question is from textbook Alegbra and Trigonometry
: Hi, I'm having difficulty with this type of problem. It's verifying trigonometric identities and this one is giving me trouble. The problem itself is tanvsinv/tanv+sinv=tanv-sinv/tanvsinv. If you could help me how to solve this problem, I would be very grateful. Thank you.This question is from textbook Alegbra and Trigonometry

Click here to see answer by stanbon(26297)

Question 137577: The chairlift at a ski resort has a vertical rise of 3,100 feet. If the length of the ride is 1.4 miles, what is the angle the chairlift makes with the horizontal (to the nearest tenth of a degree)?
Click here to see answer by checkley77(7072)

Question 137700: If A is an angle in standard position and satisfies the conditions: the terminal side of A is in quadrant 1 and lies on the line y=6x, then find the value of sin A.
Click here to see answer by dolly(163)

Question 137934: Using a calculator, find the value of cot (-414 degrees) to four decimal places.
a.-0.7265
b.-9.5143
c.-1.3764
d.-2.2460
Click here to see answer by Edwin McCravy(2922)

Question 138440This question is from textbook Algebra and Trigonometry
: Hi, this problem is giving me a hard time. The problem is rad3*sin2x=cos2x. I'm supposed to find all solutions of this equation and these double angles are making me frustrated. Thank you for helping me out.This question is from textbook Algebra and Trigonometry

Click here to see answer by solver91311(5072)

Question 138472This question is from textbook Algebra and Trigonometry
: Hi, the problem cos^2 2x - sin^2 2x=0 is giving me trouble. I don't know what to do to solve it. Please help me. Thank you.This question is from textbook Algebra and Trigonometry

Click here to see answer by stanbon(26297)

Question 138612: Solve the equation on [0,2pie). Approximate the solution(s) to four decimal places, if necessary. 2cos^2x-cosx-1=0
Click here to see answer by stanbon(26297)

Question 138704: find the exact value of each function.
1. Cos 7pi/4
2. Sin (-30')
Find the reference angle for the angle with the given measure
1. 13pi/8
2. -7pi/4
Click here to see answer by stanbon(26297)

Question 138798: Graph and find amplitude, period and phase shift
Click here to see answer by jim_thompson5910(13794)

Question 138801: Graph and the period and phase shift
Click here to see answer by jim_thompson5910(13794)

Question 138815: Prove the identity: (x is theta)
Click here to see answer by jim_thompson5910(13794)

Question 138819: Prove the identity: (x is theta)
Click here to see answer by jim_thompson5910(13794)

Question 138821: Prove the identity: (x is theta)
Click here to see answer by jim_thompson5910(13794)

Question 138823: Find the exact value of
Click here to see answer by jim_thompson5910(13794)

Question 138824: Solve
Click here to see answer by jim_thompson5910(13794)

Question 138826: Write as a sum

Write as a product
Click here to see answer by jim_thompson5910(13794)

Question 138873: Evaluate: sec 0 degree + csc 90 degree
---------------

Click here to see answer by stanbon(26297)

Question 138906: if sin x= 4/5, where 0
Click here to see answer by edjones(3298)

Question 138958: Solve the triangle, if possible.
Angle A = 30.0 degrees, side a = 17.87 and side b = 35.74
Click here to see answer by vleith(1977)

Question 139317: cot x -tan x = 2
Click here to see answer by edjones(3298)

Question 139636This question is from textbook
: Solve the equation in the interval 0<_ x < 293.14). the equation is: (tan^2)X = sin x sec x This question is from textbook

Click here to see answer by stanbon(26297)

Question 139638This question is from textbook Precalculus with limits
: how do find an algebraic expression for csc(arcsin 10x)?This question is from textbook Precalculus with limits

Click here to see answer by stanbon(26297)

Question 139726: prove or disprove without a calculator.
1. sin(pi/2 + theta) = cos theta

Click here to see answer by solver91311(5072)

Question 139752: Prove or disprove without a calculator.
(sin theta/csc 2theta)-(cos 2theta/sec theta)= -cos 3theta
Click here to see answer by solver91311(5072)

Question 140378: how do i use sin cos and tan on the calculator and how can i find the side length and angle measure of a triangle with line AC= 21in line BC=15ins and its a right triangle. I have a algebra 1 text book on page 637 # 27
Click here to see answer by Earlsdon(4900)

Question 140505: find the reference angle in radians for the given angle. Round to the nearest hundredth if necessary.
a)2.5 pi b)2.5__ c)-11 pi__
Click here to see answer by stanbon(26297)

Question 140511: A triangle has an area of 20in^2, and two of the sides of the triangle have lengths 7in. and 9in. Find the angle included by these two sides. Round answer to the nearest tenth of a degree.
I have no clue how to do this, can someone at least show me the steps?
Click here to see answer by stanbon(26297)

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