Angles ∝ and β are the two acute angles in a right triangle. use the relationship between sine and cosine to find the value of β if β > ∝. sin( x 2 + 20x) = cos(2x + 15x 2 ) a) 25° b) 28.5° c) 61.5° d) 65°

The correct option is C.

Step-by-step explanation:

Given information: Angles α and β are the two acute angles ,  β > ∝.

Given equation is

Equating both the sides.

The value of angles is

Since 61.5>28.5, therefore the value of β is 61.5. Option C is correct.

for the points

step-by-step explanation: