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3[sin^(4)(3pi//2-alpha)+sin^(4)(3pi+alph...

`3[sin^(4)(3pi//2-alpha)+sin^(4)(3pi+alpha)]-2[sin^(6)(pi//2+alpha)+sin^(6)(5pi-alpha)]=`

A

0

B

1

C

3

D

`sin4alpha + cos 6 alpha `

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 A ( TRIGONOMETRIC FUNCTIONS)
  1. If 180^(@) lt A lt 270^(@) , 270^@ lt B lt 360^(@) and sin A = -5//13...

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  2. If 13 sin A = 12 , pi//2 lt A lt pi and 3 sec B=5 , 3pi/2 lt B lt 2p...

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  3. 3[sin^(4)(3pi//2-alpha)+sin^(4)(3pi+alpha)]-2[sin^(6)(pi//2+alpha)+sin...

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

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  5. ( sin theta + " cosec " theta )^(2) + ( cos theta + sec theta )^(2)=

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  6. (cos theta + sin theta )^(2) + (cos theta - sin theta )^(2) =

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  7. ( tan alpha + " cosec " beta )^(2) - ( cot beta - sec alpha )^(2) =

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  8. (sec alpha * sec beta + tan alpha tan beta )^(2)-( sec alpha * tan be...

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  9. (sec A + tan A -1) (sec A - tan A+1)=

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  10. ("cosec " theta - sin theta ) ( sec theta - cos theta ) ( tan theta + ...

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  11. 2(sin^(6) x + cos^(6) x ) -3(sin^(4) x + cos^(4) x ) +1=

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  12. 3(sin x + cos x )^(4) + 6(sin x - cos x )^(2) + 4(sin^(6) x + cos^(6) ...

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  13. sin A ( cot A +3( 3 cot A + 1) -1 " cosec " A -10 cos A =

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  14. a sin^(2) theta + b cos^(2) theta =c implies tan^(2) theta =

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  15. sec^(4) theta (1-sin^4 theta ) - tan^(2) theta =

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  16. "cosec"^(2) theta * cot^(2) theta -sec^(2) theta * tan^(2) theta - (co...

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  17. sec^(2)A tan^(2) B-tan^(2)A sec^(2) B=

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  18. 2 sec^(2) theta - sec^(4) theta - 2 "cosec"^(2) theta + " cosec"^(4) t...

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  19. sin^(2) alpha * tan alpha + cos^(2) alpha * cot alpha + 2 sin alpha co...

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  20. If (sin alpha + "cosec" alpha )^(2) + ( cos alpha + sec alpha )^(2)=k+...

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