Mathematics Practice Test – Trigonometrical Ratios of Angles (Questions with Answers and Explanations)

Given that Cos x = 0.7431, 0^o < x < 90^o, find the value of 2 Sin x. (WASSCE 2000)

A. 0.74^o      B. 42.0^o      C. 1.34^o      D. 0.34^o

If tan x = , find the value of Sin x; 0^o < x < 90^o (WASSCE 1996)

A.     B.     C.     D.  .

If Sin (x + 30^o) = Cos 40^o, find x (WASSCE 1998)

A. 10^o   B. 20^o   C. 50^o   D. 60^o

If Sin θ = Cos θ, for 0^o < θ < 90^o, find the value of θ. (WASSCE 1996)

A. 45^o, 225^o     B. 135^o, 315^o      C. 45^o, 315^o      D. 135^o, 225^o

Cos 65^o has the same value as _______ (WASSCE 1997)

A. Sin 65^o      B. Cos 25^o      C. 115^o      D. Cos 295^o