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sqrt(3)cossec2 0^0-sec2 0^0...

`sqrt(3)cossec2 0^0-sec2 0^0`

A

2

B

1

C

4

D

`-4`

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
  1. The value of theta lying between 0 and pi/2 and satisfying |[1+sin^2th...

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  2. The value of sqrt3cot20^(@)-4cos20^(@) is

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  3. sqrt(3)cossec2 0^0-sec2 0^0

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  4. The equation sin^2theta=(x^2+y^2)/(2x y),x , y!=0 is possible if

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  5. The value of sin(pi+theta)sin(pi-theta)cosec^(2)theta is equal to

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  6. If (sin(x+y))/(sin(x-y))=(a+b)/(a-b) , then show that (tanx)/(tany)=(...

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  7. if sin x + sin^2 x = 1, then the value of cos^2 x + cos^4x is

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  8. If tan(x/2)=cosec x - sin x then the value of tan^2(x/2) is

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  9. If cosA=3/4, then 32 sin, A/2 sin, (5A)/2= (A) sqrt(11) (B) -sqrt(11) ...

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  10. (1+cos.(pi)/(8))(1+cos.(3pi)/(8))(1+cos.(5pi)/(8))(1+cos.(7pi)/(8)) is...

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  11. If t a n^2theta=2t a n^2varphi+1 , prove that cos2theta+s in^2varphi=0...

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  12. If sin2theta=cos3theta where theta in (0,pi/2) , then sintheta is equa...

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  13. if y=cos^2theta+sec^2theta then

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  14. The value of sinpi/(14)sin(3pi)/(14)sin(5pi)/(14)sin(7pi)/(14)sin(9pi)...

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  15. The value of sin(pi/14)sin((3pi)/14)sin((5pi)/14) is

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  16. if sin(alpha+beta)=1 and sin(alpha-beta)=1/2 " "0lealpha,beta,lepi/2,t...

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  17. If cos(theta-alpha) = a and cos(theta-beta) = b then the value of sin^...

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  18. If K=sin(pi/(18))sin((5pi)/(18))sin((7pi)/(18)), then the numerical va...

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  19. Find the value of log tan1^0logtan2^0logtan89^0

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  20. If 1+sinx+sin^2x+sin^3x+oo is equal to 4+2sqrt(3),0<x<pi, then x is eq...

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