Question

If x sin (90° - 0) cot (90° - θ) = cos (90° - θ), then x =?
A. 0
B. 1
C. - 1
D. 2

Answer 1

A. 0

is the correct answer

Answer 2

Answer:

x(sin90-Φ) cot (90-Φ) = cos(90-Φ)

=> xcosΦ.tanΦ = sinΦ

=> xtanΦ = sinΦ / cosΦ

=> xtanΦ = tanΦ

=> x = 1

Hence,the right answer is 1.

Hope it helped you.