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Let the smallest positive value of x for...

Let the smallest positive value of x for which the function ` f(x)=sin""(x)/(3)+sin""(x)/(11), ( x in R )` achieves its maximum value be ` x_(0)`. Express `x_(0)` in degree i.e. ` x_(0)=alpha^(0)`. Then , the sum of the digits in ` alpha ` is

A

15

B

17

C

16

D

18

Text Solution

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The correct Answer is:
D
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ARIHANT MATHS-TRIGONOMETRIC EQUATIONS AND INEQUATIONS-Exercise (Single Option Correct Type Questions)
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  13. Let 2 sin^(2)x + 3 sin x -2 gt 0 and x^(2)-x -2 lt 0 ( x is measured ...

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  17. In the interval [-pi/2,pi/2] the equation log(sin theta)(cos 2 theta)=...

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  18. If sum(i=1)^(n) cos theta(i)=n, then the value of sum(i=1)^(n) sin the...

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