3. If cos x = a/b, then sin x is equal to:
(a)
2
-
2
/b (b) b-a/b (c) √
2
-
2
/b (d) √(b-a)/b
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1
srry i Not know
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Answered by
0
Given, cos x= a/b
Since, sin x = √1 - cos²x
= √1 - (a/b)²
= √b²- a²/b²
= √b² - a²/b
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