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sin^6A+cos^6A+3sin^2A.cos^2A=...

`sin^6A+cos^6A+3sin^2A.cos^2A=`

A

0

B

1

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2

D

3

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MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE-MCQs
  1. If, in a DeltaABC,tanA=1andtanB=2, then: tanC= (a) 1 (b) 2 (c) 3 (d) 4

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  2. If, in a DeltaABC,tanA=1andtanB=2, then: tanC=

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  3. The value of sin^2 75^0-sin^2 15^0 is 1//2 b. sqrt(3)//2 c. 1 d. 0

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  4. If DeltaABC is a right-angled at A, then: cos^2B+cos^2C=

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  5. sin^6A+cos^6A+3sin^2A.cos^2A=

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  6. If cos(A-B)=3/5and tan A tanB=2, then

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  7. If A, B, C, D be the angles of acyclic quadrilateral, show that : cosA...

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  8. If sin.alpha/2+cos.alpha/2=1.4, then: sinalpha=

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  9. If tanalpha+cotalpha=m then value of tan^4alpha+cot^4alpha is

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  10. If cos theta+cos phi=a and sin theta - sin phi=b, then: 2cos(theta + p...

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  11. If sinx+cosecx=2, then, for all n in N, the value of: sin^nx+cosec^nx=...

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  12. If sinA+sinB+sinC=(3sqrt3)/(2). then: DeltaABC is (a) isosceles (b) ri...

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  13. In triangle ABC, cos^2A + cos^2B - cos^2C = 1, then the triangle is ne...

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  14. If tanx=b//a, then: acos2x+bsin2x=

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  15. (sin^(2)3A)/(sin^2A)-(cos^(2)3A)/(cos^2A)=

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  16. If t a ntheta1t a ntheta2=k , then ("cos"(theta1-theta2))/("cos"(theta...

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  17. tan 5x.tan3x.tan2x=

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  18. If a+btantheta=secthetaandb-atantheta=2sectheta, then: a^2+b^2=

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  19. If cos25^0+sin25^0=p , then cos50^0 is sqrt(2-p^2) (b) -sqrt(2-p^2) ...

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  20. If tan(x+y)=33 and x= tan^(-1) 3 then y will be

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