Question

Which pair are equal trig values? A) tan 45° and sin 45° B) sin 40° and sin 50° C) sin 36° and cos 54° D) cos 65° and sin 65°

Answer 1

Answer:

option C

$sin(36\°)\ and\ cos(54\°)$

Step-by-step explanation:

we know that

If

$\alpha+\beta=90\°$ -------> complementary angles

then

$sin(\alpha)=cos(\beta)$

In this problem

the option C

we have that

$36\°+54\°=90\°$ -------> complementary angles

so

$sin(36\°)=cos(54\°)$