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Paladinen [302]
3 years ago
15

What is the answer

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

B

Step-by-step explanation:

sinΘ = \frac{6}{7} = \frac{opposite}{hypotenuse}

This is a right triangle with hypotenuse 7 and opposite side 6

Use Pythagoras' identity to find the adjacent side a

a² + 6² = 7²

a² + 36 = 49 ( subtract 36 from both sides )

a² = 13 ( take square root of both sides )

a = \sqrt{13}

Then

cosΘ = \frac{adjacent}{hypotenuse} = \frac{\sqrt{13} }{7} → B

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