Question

13. If sin A = 3/4 then cos A is:
​

Answer 1

Step-by-step explanation:

sin A = 3/4

sin²A= 9/16

1-Sin²A=7/16=cos²A

cosA=✓7/4

Answer 2

Answer:

cos A=√7/4

Step-by-step explanation:

use this formula

sin A=p/h now apply puthagorus u will got base

then apply

Cos A=b/h