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Andrews [41]
3 years ago
14

Please please help me

Mathematics
1 answer:
Kryger [21]3 years ago
3 0

Answer:

\frac{\sqrt{11} }{6}

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

cosx = \sqrt{1-sin^2x}

cosΘ = \sqrt{1-(5/6)^2}

         = \sqrt{1-\frac{25}{36} } = \sqrt{\frac{11}{36} } = \frac{\sqrt{11} }{6}

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