Mathematics Past Questions and Answers

Given that tan x = 5/12, what is the value of sin x + cos x ?

Cos 75^o has the same value as

If sin x = 12/13, where 0° < x < 90°, find the value of 1 - cos\(^2\)x

The angle of elevation of the top of a tower from a point on the horizontal ground, 40m away from the foot of the tower is 30o. Find the height of the tower.

At a point 500m from the base of a water tank the angle of elevation of the top of the tank is 45o. Find the height of the tank,