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The value of sin^2 12^0+sin^2 21^0+sin^2...

The value of `sin^2 12^0+sin^2 21^0+sin^2 39^0+sin^2 48^0-sin^2 9^0-sin^2 18^0` is _______

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
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  5. Prove that sqrt3 "cosec" 20^@-sec20^@=4

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  7. If alpha,beta,gamma,delta are the smallest positive angles in ascendi...

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  8. (sin^2A-sin^2B)/(sinAcosA-sinBcosB)is equal to

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  10. The value of cot((7pi)/16)+2cot((3pi)/8)+cot((15pi)/16) is (a)4 (b...

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  11. If t a n^2theta=2t a n^2varphi+1 , prove that cos2theta+sin^2phi =0.

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  13. If cos(alpha-beta)=3sin(alpha+beta),t h e n 1/(1-3sin2alpha)+1/(1-3sin...

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  14. The value of cos^2 10^0-cos10^0cos50^0+cos^2 50^0 is equal to

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