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The value of x , 0 le x le (pi)/2 which...

The value of x ` , 0 le x le (pi)/2` which satisfy the equation ` 81^( sin^(2)x)+81^(cos^(2)x)=30 ` are

A

`(pi)/(6),(pi)/(3)`

B

`(pi)/(3),(pi)/(2)`

C

`(5pi)/(6),(pi)/(3)`

D

`(2pi)/(3),(pi)/(3)`

Text Solution

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
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