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If t a ntheta=\ -4/3 then s intheta is- ...

If `t a ntheta=\ -4/3` then `s intheta` is- `-4/5\ b u t\ not4/5` b. `-4/5or4/5` c. `4/5b u t\ not-4/5` d. none of these

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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
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  2. If sin(alpha + beta) = 1, sin(alpha - beta) = 1/2 then tan(alpha + 2 b...

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  3. If t a ntheta=\ -4/3 then s intheta is- -4/5\ b u t\ not4/5 b. -4/5or4...

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  4. sec^2theta=(4x y)/((x+y)^2) is true if and only if x+y!=0 (b) x=y ,x!...

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  5. If u=a^2cos^2theta+b^2sin^2theta+a^2sin^2theta+b^2cos^2theta then the ...

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  8. Let cos(alpha+beta)""=4/5 and let s in(alphabeta)""=5/(13) where 0lt=a...

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  10. In a DeltaPQR. if 3 sinP +4 cosQ=6 and 4sinQ+3cosP=1, then the angle R...

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  11. The expression (t a n A)/(1-cot A)+(cot A)/(1-t a n A) can be written ...

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  12. Let fK(x)""=1/k(s in^k x+cos^k x) where x in R and kgeq1 . Then f4(x)...

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  14. If A >0,\ B >0\ a n d\ A+B=\ pi/6 , then the minimum value of t a n A+...

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  15. Given both thetaa n dvarphi are acute angles and sinalphabetagamma=1/2...

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  16. In an equilateral triangle 3 coins of radii 1 unit each are kept so...

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  17. t1 = (sintheta)^costheta ,t2 = (sintheta)^sintheta , t3 = (costheta)^c...

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  18. If (sin^4x)/2+(cos^4x)/3=1/5t h e n tan^2x=2/3 (b) (sin^8x)/8+(cos^...

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  19. For 0<theta<pi/2 , the solution (s) of sum(m=1)^6cos e c(theta+((m-1)/...

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  20. The maximum value of the expression 1/(sin^2 theta + 3 sin theta cos t...

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