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Which of the following is correct sin 1...

Which of the following is correct `sin 1^@ > sin 1`

A

`sin1^(@)gtsin1`

B

`sin1^(@)ltsin1`

C

`sin1^(@)=sin1`

D

`sin1^(@)=(pi)/(180)sin1`

Text Solution

Verified by Experts

The correct Answer is:
B
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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
  1. The value of tan1^@ tan 2^@ tan 3^@ ... tan 89^@ is

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  2. The maximum value of cos^2(pi/3-x)-cos^2(pi/3+x), is

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  3. Which of the following is correct sin 1^@ > sin 1

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  4. Given A=sin^2theta+cos^2theta, then for all real theta, 1lt=Alt=2 (b...

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  5. The expression tan^2alpha+cot^2alpha is

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  6. If tantheta=-4//3, then sintheta is

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  7. If sintheta+costheta=sqrt2costhetathen costheta-sintheta is equal to

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  8. In a right angled triangle, the hypotenuse is four times as long as th...

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  9. If theta lies in the first quardrant and costheta=(8)/( 17 ), then fi...

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  10. cos^4(pi/8)+cos^4((3pi)/8)+cos^4((5pi)/8)+cos^4((7pi)/8)=

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  11. If tan(A+B)=pand tan(A-B)=q, then the value of tan2A, is

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  12. In a triangle ABC, sin A-cosB=cosC, then angle B, is

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  13. If theta lies in the first quadrant which of the following in not true

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  14. cos2 theta+2 costheta is always

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  15. The interior angles of a polygon are in AP The smallest angle is 120 a...

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  16. The maximum and minimum values of -4le5cos theta+3cos(theta+(pi)/(3...

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  17. sin36^@sin72^@sin108^@sin144^@=5/16

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  18. If A=tan6^0tan42^0 and B=cot66^0cot78^0 , then

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  19. If sinx+cosesx=2,thensin^(n)x+cosec^(n)x is equal to

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  20. If x/acosalpha+y/bsinalpha=1, x/acosbeta+y/bsinbeta=1 and (cos alpha c...

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