Mathematics

Find angle A, if cos 53° sec (90° - A) = 1.

18 Likes

cos 53° sec (90° - A) = 1

⇒ sec (90° - A) = $\dfrac{1}{\text{cos 53°}}$

⇒ sec (90° - A) = sec 53°

So, 90° - A = 53°

⇒ A = 90° - 53°

⇒ A = 37°

Hence, A = 37°.

Answered By

8 Likes