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Helppppppppppppppppp

Helppppppppppppppppp-example-1

1 Answer

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csc Ф=1/sinФ, so sinФ=7/8
imagine a right triangle , the leg opposite to Ф is 7, the hypotenuse is 8, you can find the leg adjacent to Ф: √(8²-7²)=√15
cotФ=adjacent/opposite=√15/7
the answer is B.
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