If Sin X = 15/17, Then Cos X = ? - Testpoint

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If sin x = 15/17, then cos x = ?

8/17
15/17
17/8
1/17

Explanation

Use the identity: sin²x + cos²x = 1

Given: sin x = 15/17

So, cos x = √(1 − (15/17)²)

= √(1 − 225/289) = √(64/289) = 8/17

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