What value of makes this equation true? sin(30) = cos()

Question

What value of  makes this equation true? sin(30) = cos()

ngockhue · Answer

sin(30)= -0.952... cos(60) = -0.952... sin(30) = cos(60)

Jezebel · Answer

Answer:   cos60°   Step-by-step explanation:   Using the cofunction identity  cos(90 - x) = sinx , then  sin30° = cos(90 - 30)° = cos60°