Question

The sine of a 30 degree angle is equal to the cosine of a 60 degree angle.

True
False

Answer 1

The answer is True.........................

Answer 2

The sentence is True

Explanation:

In Geometry, there is a theorem that relation the sine angle and the cosine angle. The theorem says: The sine of any acute angle is equal to the cosine of its complement.

So, let β represent an acute angle

sin (β)=cos(90-β)

Given β=30, let it replace in the formule:

sin (30)=cos(90-30)

sin (30)=cos(60)

Done.