Question

tell me trigonometrical formula of sin ( 90- A)​

Answer 1

Answer:

sin(90-A) = cos A

hope it helps u !!!!

Answer 2

sin (90-A) = Cos A

Therefore

sin (90-30 ) = cos 60° = 1/2

sin (90-45) = cos 45° = 1/√2

sin (90-60) = cos 30° = √3/2

sin (90-0) = cos 90° = 0

sin (90-90) = cos 0° = 1