What is true for△DEF, if ∠F is a right angle?
A
sinD=cosD because the ratio is the same for each angle in any right triangle.
B
sinD=cosE because the opposite leg for ∠D is the same as the adjacent leg for ∠E.
C
sinD=cosE because the adjacent leg for ∠D is the same as the opposite leg for ∠E.
D
sinD=cosD because the opposite leg and the adjacent leg are the same length in the triangle.