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Which expressions can be used to find m∠ABC? Check all that apply.

Which expressions can be used to find m∠ABC? Check all that apply.-example-1
User Wajih
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1 Answer

6 votes

Answer:


\cos^(-1)((6.3)/(9.8))


\sin^(-1)((7.5)/(9.8))

Explanation:

Recall the mnemonics SOH-CAH-TOA

The sine ratio is the length of the opposite side expressed over the hypotenuse.


\sin m\angle ABC=(7.5)/(9.8)

Take the sine inverse of both sides to get;


m\angle ABC=\sin^(-1)((7.5)/(9.8))

The cosine ratio is the length of the adjacent side expressed over the hypotenuse.


\cos m\angle ABC=(6.3)/(9.8)

Take the cosine inverse of both sides to get;


m\angle ABC=\cos^(-1)((6.3)/(9.8))

User Inertia
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