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Select all the expressions that must be equivalent to cos A.

Select all the expressions that must be equivalent to cos A.-example-1
User Akshata
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8.8k points

1 Answer

1 vote

Given data:

The given right angle triangle.

The expression for cos(A) is,


\begin{gathered} \cos (A)=\cos (x^(\circ)) \\ =\sin (90-x) \\ =\sin (y) \\ =\cos (90-y) \end{gathered}

Thus, the given expression can be written as sin(90-x), sin(y), and cos(90-y), so options (B), (D) and (G) are correct.

User Fedino
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