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If tan ((Pi)/(2) - (theta)/(2)) = sqrt3,...

If `tan ((Pi)/(2) - (theta)/(2)) = sqrt3`, the value of `cos theta` is____

A

0

B

`(1)/(sqrt2)`

C

1/2

D

1

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UNITED BOOK HOUSE-Trigonometric Rations and Trigonometric Identities-Exercise
  1. Maximum value of sintheta + costheta is

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  2. If costheta + sectheta = 2, then the value of cos^2017 theta + sec^201...

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  3. If tan ((Pi)/(2) - (theta)/(2)) = sqrt3, the value of cos theta is

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  4. If 2 sin ((pi)/(2)) = x^2 + (1)/(x^2) = , then the value of (x - (1)/(...

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  5. If A=sin^2theta+cos^4theta then for all real values of theta

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  6. If cos 0 = x^2 - x + 5/4, the value of x will be

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  7. In triangleABC, angleB = 90^@ and AB : BC = 2 : 1. The value of sin A ...

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  8. If cos theta + sin theta = sqrt2 cos theta, then cos theta - sin theta...

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  9. If cos^4 theta - sin^4 theta = 2/3, then the value of (1 - 2 sin^2 the...

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  10. If (cosalpha)/(cosbeta) = a and (sinalpha)/(sinbeta) = b, then the val...

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  11. If theta is an acute angle and tan theta + cot theta = 2, then the val...

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  12. If (2 tan^2 30^@)/(1 - tan^2 30^@) + sec^2 45^@ - sec^2 0^@ = x sec 60...

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  13. Which one of the following is true for 0^@ < theta < 90^@?

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  14. If cos^2 alpha - sin^2 alpha = tan^2 beta, then the value of (cos^2 be...

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  15. For any values of sqrt frac(sec theta - 1)(sec theta + 1) = ?

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  16. If 0^@ < A < 90^@, then the value of tan^2 A + cot^2 A - sec^2 A cosec...

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  17. The vlaue of (2sin^3 theta - sin theta)/(costheta - 2 cos^3 theta) is ...

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  18. If r sin theta =7/2 and r costheta = (7sqrt3)/(2) then value of r is

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  19. If theta + emptyset = (Pi)/(2) and sin theta = 1/2 then the value of s...

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  20. If a cos theta + b sin theta = p and asin theta - bcos theta = q, then...

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