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If a sin^(2) x +b lies in the interval...

If ` a sin^(2) x +b ` lies in the interval [-2,8] for every `x in R` then find the value of (a-b)

A

12

B

13

C

14

D

15

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The correct Answer is:
A
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MOTION-TRIGNOMETRIC RATIOS & IDENTITIES -Exercise 1
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  14. If a sin^(2) x +b lies in the interval [-2,8] for every x in R then...

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