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Period of sin^2theta is- pi^2 b. pi/2 c....

Period of `sin^2theta` is- `pi^2` b. `pi/2` c. `2pi` d. `pi`

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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
  1. Find the exact value of tan^2(pi/16)+tan^2((3pi)/16) + tan^2((5pi)/16)...

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  2. Period of f(x)=sin^4x+cos^4x is- pi b. pi/2 c. 2pi d. none of these

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  3. Period of sin^2theta is- pi^2 b. pi/2 c. 2pi d. pi

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  4. If y=sec^2theta+cos^2theta,\ theta!=0, then- y=0 b. ylt=2 c. ygeq-2 d....

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  5. The value of (1-tan^2 15^0)/(1+tan^2 15^0)= 1 b. sqrt(3) c. (sqrt(3))...

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  6. If alpha is a root of 25 cos^2theta+5costheta-12=0,pi/2<alpha<pi, , th...

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  7. If sin(alpha + beta) = 1, sin(alpha - beta) = 1/2 then tan(alpha + 2 b...

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

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

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

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  11. piltalpha-betalt3pi,sinalpha+sinbeta=-21/65,cosalpha+cosbeta="-27/65,t...

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  12. If 0ltxltpi and cosx + sinx =1/2 , then tanx is (1) ...

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

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  14. If A""=""s in^2x""+""cos^4x , then for all real x : (1) 3/4lt=Alt=1...

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

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

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  17. 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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  18. If m and M are the minimum and the maximum values of 4+1/2 sin^2 2x-2c...

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

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