Question

In the equation “Find the value of sin 38 degree - cos 52 degree”
Why do we substitute cos 52 for sin 38 to find the answer?

Answer 1

Answer:

sin 38 - cos 52

Step-by-step explanation:

sin38-cos(90-38)

sin38-sin38=0

we substitute cos 52 for sin 38 becoz

cos (90-degree)=sin degree