Question

plzzz answer this question.....

give reason for ur answer...​

Answer 1

Answer:

( C) √7/4

Step-by-step explanation:

sin x = 3/4

sin∅ = P/H

= 3/4

Let P= 3x , H = 4x

By Pythagoras theorem

H²= B² + P²

(4x)² = B² + (3x)²

B²= 16x² - 9x²

B² = 7x²

B = √7 x

Cos ∅= B/H

= √7x / 4x

= √7/ 4