Tutors Answer Your Questions about Trigonometry-basics (FREE)
Question 57555: 1. Find the complement of a 51 ° 49' angle.
a. 38 ° 11'
b. 128 ° 11'
c. 38 ° 51'
d. 128 ° 51'
2. Find the supplement of the radian measure 7 π /8. Express your answer in terms of π .
a. 13 π /8
b. π /8
c. 9 π /8
d. 5 π /8
3. Classify 725 ° by quadrant, and state the positive angle with measure less than 360 ° that is coterminal with it.
a. Quadrant II, 95 °
b. Quadrant I, 5 °
c. Quadrant IV, 275 °
d. Quadrant III, 185 °
4. Convert 105 ° to exact radian measure.
a. 6 π /7
b. 12 π /7
c. 7 π /6
d. 7 π /12
5. Convert the radian measure 7 π /5 to exact degree measure.
a. 128.5 °
b. 252 °
c. 504 °
d. 126 °
6. Convert the radian measure 1.6 to degree measure to the nearest hundredth of a degree.
a. 91.67 °
b. 288 °
c. 183.35 °
d. 97.40 °
7. Find the measure in radians of the central angle of a circle with radius 4 inches and arc length 8 inches.
a. 32
b. 0.5
c. 2
d. 2 π
Click here to see answer by rcmcc(152)   |
Question 57555: 1. Find the complement of a 51 ° 49' angle.
a. 38 ° 11'
b. 128 ° 11'
c. 38 ° 51'
d. 128 ° 51'
2. Find the supplement of the radian measure 7 π /8. Express your answer in terms of π .
a. 13 π /8
b. π /8
c. 9 π /8
d. 5 π /8
3. Classify 725 ° by quadrant, and state the positive angle with measure less than 360 ° that is coterminal with it.
a. Quadrant II, 95 °
b. Quadrant I, 5 °
c. Quadrant IV, 275 °
d. Quadrant III, 185 °
4. Convert 105 ° to exact radian measure.
a. 6 π /7
b. 12 π /7
c. 7 π /6
d. 7 π /12
5. Convert the radian measure 7 π /5 to exact degree measure.
a. 128.5 °
b. 252 °
c. 504 °
d. 126 °
6. Convert the radian measure 1.6 to degree measure to the nearest hundredth of a degree.
a. 91.67 °
b. 288 °
c. 183.35 °
d. 97.40 °
7. Find the measure in radians of the central angle of a circle with radius 4 inches and arc length 8 inches.
a. 32
b. 0.5
c. 2
d. 2 π
Click here to see answer by funmath(2925) |
Question 58664: Hello,
I would like to thank you all for your time, this is the last question I am having problems with.
Given cos(theta)=-0.4567 find the value(s) of theta, correct to the nearest degree, for 0
best regards,
Len
Click here to see answer by stanbon(57361) |
Question 59174: if you would be so kind-
I had a question given to me by my teacher. the case is sin(x)=5/12. i was asked to figure out what x equals. i know that you can type into your calculator sin negative 1 (inverse of sin) times 5/12. but my problem is how do you get from sin(x)=5/12 to sin negative one times 5/12.i would appreciate if you can show me your work step by step
thanks, nathan
Click here to see answer by stanbon(57361) |
Question 59553: find the length of the arc on a circle of radius r=5 yard intercepted by a central angle 0=70degree..................the zero at the end has a line through it, and the 70 has a degree circle but i dont know how to make those with my keyboard..
Click here to see answer by kos(2) |
Question 59553: find the length of the arc on a circle of radius r=5 yard intercepted by a central angle 0=70degree..................the zero at the end has a line through it, and the 70 has a degree circle but i dont know how to make those with my keyboard..
Click here to see answer by Edwin McCravy(8909)  |
Question 59619: two distinct, nonparallel lines are tangent to a circle. the measurement of the angle between the two lines is 54 (angle QVP)
a. Suppose the diameter of the circle is 2 cm. What is the distance VP?
b. Suppose the distance VP is 3.93cm. What is the diameter of the circle?
c. Find a formula for d, the diameter of the circle, in terms of VP.
d. Find a formula for VP in terms of d, the diameter of the circle.
Click here to see answer by venugopalramana(3286) |
Question 60852: To whom may it concern,
I have difficulty to do this question.
An isosceles triangle has a vertical angle of 108° and a base 20 cm long. Calculate its altitude.
Please help and thank you.
CH Lam
Click here to see answer by jai_kos(139) |
Question 60855: To whom may it concern,
I have trouble to do this question.
From a point at the same level as the foot of a building 50 metres high, the angle of elevation of its top is found to be 52.83°. Find the distance of the point of observation from the top of the building.
Please help and thank you.
CH Lam
CH Lam
Click here to see answer by venugopalramana(3286) |
Question 60853: To whom may it concern,
I have problems to do this question.
An aerial mast is supported by four wires attached to points on the ground each 57 metres away from the foot of the mast. If each wire makes an angle of 32° with the horizontal, find the height of the mast.
Thank you very much.
CH Lam
Click here to see answer by Earlsdon(6287) |
Question 60854: To whom may it concern,
I have trouble to do this question.
To find the width of a river, a boy places a wooden peg at a point A on one side directly opposite an object B on the opposite bank. From A, he walks 50 m along the bank to a point C. He observes that the angle of ACB = 34°. Calculate the width of the river.
Please help and thank you.
CH Lam
Click here to see answer by Earlsdon(6287) |
Question 61002: Hi,
I am trying to help my daughter with her math homework and we are both feeling overwhelmed. There are some concepts that her teacher hasn't covered yet in class...I am trying to help her without her textbook being at home.
My question is:
Find the numerical value of the expression sin 30degrees + cos 60degrees.
The answer choices are:
1. 1
2. 1/4
3. square root of 3
4. square root of 3 + 1/2
I am not trying to cheat, but just am trying to help her get the answer and learn how to do this...
Thanks! The answers that we were coming up with were .5 or 180! so not sure what to do!
Click here to see answer by funmath(2925) |
Question 61066: What is the advantage of helping students with their homework? What's in it for you guys? Are you simply pure philanthopic beings with the sole desire to help humanity, or is there a catch? I know I am being cynical, but there is no such thing as a free lunch.
Click here to see answer by checkley71(8403) |
Question 61066: What is the advantage of helping students with their homework? What's in it for you guys? Are you simply pure philanthopic beings with the sole desire to help humanity, or is there a catch? I know I am being cynical, but there is no such thing as a free lunch.
Click here to see answer by funmath(2925) |
Question 61091: To whom may it concern,
I have problem to solve this question below.
A ladder 6.54 metres long leans against a wall, touching a window sill, and makes an angle of 62° with the ground. Find the height of the window sill above the ground. How far is the foot of the ladder from the foot of the wall ?
Please help and thanks in advanced.
CH Lam
Click here to see answer by funmath(2925) |
Question 61090: To Whom May It Concern,
I have the question but I am not very able to do it.
A church spire 82 metres high casts a shadow 62 metres long. Find the angle of elevation of the sun at that moment.
Please help. Thanks a lot.
CH Lam
Click here to see answer by funmath(2925) |
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