Question

Right triangle DEF is shown. Which is equal to sin∠E?

A) cos∠D


B) cos∠F
C) sin∠D
D) sin∠F

Answer 1

B

Explanation:

Answer 2

B) cos∠F

Explanation:

SOH CAH TOA tells you ...

... Sin = Opposite/Hypotenuse

... sin(E) = DF/EF

It also tells you ...

... Cos = Adjacent/Hypotenuse

... cos(F) = DF/EF

So ...

... sin(E) = cos(F)