84 Answered Questions for the topic Trignometry

Trignometry

11/09/14

What is the length of the shadow?
A 5'6" person walking down the street notices his shadow. If the angle of elevation from the tip of the shadow to the sun is 60 degrees, what is the length of the shadow?
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Trignometry

07/26/14

math prob in des.
The temperature of a chemical reaction ranges between –10°C and 50°C. The temperature is at its lowest point when t = 0 and completes one cycle over a six-hour period. What is a sine function that... more
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Trignometry

04/15/14

You measure angle of elevation from ground to top of building as 32°. When move 50 m closer to building, angle of elevation is 53°. How high is building?
alegebra problem, involves sin, cos, tan, csc, sec, cot
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Trignometry

03/12/14

may i have help?
complete the identity: sec (t)- cos (t)=?   1.) -2tan^2(t)   2.) sin(t) tan(t)   3.) sec (t) csc (t)   4.) 1+ cos (t)
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Trignometry

01/01/14

if cosa+sina=2cosathen prove cosa-sina=2sina
if cosa+sina=√2cosa then prove cosa-sina=√sina
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Trignometry

11/25/13

what are the solutions to cos (30) = -1 in the interval (0,2radian)
what are the solutions to cos (30) = -1 in the interval (0,2radian).   Please I need step by step instructions on how the answer was found.    P.S also looking for a tutor who can tutor me... more
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Trignometry

11/11/13

if you were to find the cos75°, which formulas could you use? Would you get the same answer using both methods? How would you know?
 if you were to find the cos75°, which formulas could you use? Would you get the same answer using both methods? How would you know?   please explain
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Trignometry

08/06/13

if sin teta = -1/3 and teta does not lie in the quadrant 3 find the value of cos teta
FIND THE VALUE OF COS TETA
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05/31/13

Simplify : Tan^(-1) {a.cosx - b.sinx/ b.cosx + a.sinx} If x € (-p/2 , +p/2)
Simplify. Please i need help! p- stands for Pi (radians). and yeah, its like this (a.cosx - b.sinx) / (b.cosx + a.sinx). Amd Tan^(-1) stands for the tangent inverse (tan inverse). We need to... more
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