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Ksju [112]
3 years ago
5

In the figure, m∠B = m∠C and ∠D is a right angle. cos B =

Mathematics
2 answers:
Anna [14]3 years ago
5 0
Because m∠B = m∠C, therefore
cosB =  cosC

By definition,
cosC= \frac{CD}{AC}

Therefore
cosB= \frac{CD}{AC}

vagabundo [1.1K]3 years ago
4 0

Answer:

sin A

Step-by-step explanation:

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