Question

cos 50° = sin------- º
1) 50
2)40​

Answer 1

Step-by-step explanation:

cos theta = sin [ 90 - theta ]

cos 50 = sin [ 90 - 50 ]

cos 50 = sin 40

Answer 2

Answer:

cosθ = sin (90° - θ)

therefore,

cos 50°= sin (90° - 50°)

cos 50°= sin 40°