a) sin (u/2) b) cos (2u) c) tan (2u)

a) sin (u/2) b) cos (2u) c) tan (2u)

pls answer to this question urgent...

if tan square theta=1-e square,then prove that sec square+tan cube theta cosec theta=(2-e square)3/2

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Use a 30°-60°-90° triangle to justify the conjecture

If point A is 54 feet from the tree, and the angle between the ground at point A and the top of the tree is 25 degrees, find the height of the tree.

If point A is 54 feet from the tree, and the angle between the ground at point A and the top of the tree is 25 degrees, find the height of the tree.

The solution to the trig equation 4cos theta +3 =0 are in which quadrant? Given csc theta = 2 sqrt3/3 and -270 degrees < theta <180 degrees Determine the exact values...

a bookcase fits diagonally into a corner of a room. Each side uses the same amount of wall space. Front of bookcase is 54 inches wide. What angles are formed where the front of the bookcase touched...

Solve the problem using trigonometric ratios and round your answer to the nearest whole number.

A monument and a building were placed on the circumference of a circle of radius "r" ft. on the level ground, the angle of elevation of their tops at the center of the circle would...

If m = 6.25 cm and n = 10 cm, what is the measure of angle ?

i need help in trigonometric ratios