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Find the value of the following: sin 7...

Find the value of the following:
`sin 75^@`

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MAXIMUM PUBLICATION-TRIGONOMETRIC FUNCTIONS-EXAMPLE
  1. Find the value of the following: sin^2(pi/6)+cos^2(pi/3)-tan^2(pi/4)

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  2. Find the value of the following: 2sin^2(pi/6)+cosec^2((7pi)/3)cos((2...

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  3. Find the value of the following: sin 75^@

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  4. Find the value of the following: tan 15^@

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  5. Find the principle and general solution of the following. sin x=sqr...

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  6. Find the principle and general solution of the following. cos x = 1...

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  7. Find the principle and general solution of the following. tan x = s...

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  8. Find the principle and general solution of the following. cosec x =...

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  9. prove the following cos(pi/4+x)+cos(pi/4-x) = sqrt2cosx

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  10. prove the following (sin 5x+sinx-2sin3x)/(cos5x-cosx) = tanx

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  11. prove the following sin2x+2sin4x+sin6x=4cos^2xsin4x

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  12. prove the following (sinx-sin3x)/(sin^2x-cos^2x)=2sinx

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  13. prove the following (cos2x)/(1+sin2x) = tan(pi/4-x)

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  14. prove the following (sin3x)/(1+2cos2x)=sinx

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  15. prove the following sin^2 6x-sin^2 4x =sin2xsin10x

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  16. prove the following (cos4x+cos3x+cos2x)/(sin4x+sin3x+sin2x)=cot3x

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  17. Find the general solution of the following equations cos 4x = cos 2x

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  18. Find the general solution of the following equations sin 2x+ cos x =...

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  19. Find the general solution of the following equations cos 3x+cos x-co...

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  20. In Triangle ABC, if a=25, b=52 and c=63, find cos A and sin A.

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