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Show that sin ^(4). (pi)/(8)+ sin ^(4) ...

Show that `sin ^(4). (pi)/(8)+ sin ^(4) .(3pi)/(8) sin ^(4). (5pi)/(8)+sin ^(4). (7pi)/(8) =(3)/(2)`

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"sin"^(4)(pi)/(16) + "sin"^(4) (3pi)/(16) + "sin"^(4) (5pi)/(16) + "sin"^(4) (7pi)/(16)=

(ii) Find the value of sin^(2). (pi)/(4) + sin^(2). (3pi)/(4) + sin^(2). (5pi)/(4) + sin^(2). (7pi)/(4) .

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SRISIRI PUBLICATION-QUESTION PAPER -Section B
  1. Show that sin A= (sin 3A) /(1+2 cos 2A). Hence find the value of sin 1...

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  2. Show that 1/(sin 10^(@)) - (sqrt(3))/(cos 10^(@)) = 4.

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  3. Show that sin ^(4). (pi)/(8)+ sin ^(4) .(3pi)/(8) sin ^(4). (5pi)/(8)...

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  4. Prove that (1+cos""pi/10)(1+cos""(3pi)/10)(1+cos""(7pi)/10)(1+cos""(9p...

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  5. If cos alpha =(3)/(5) and cos beta =(5)/(13) and alpha, beta are acut...

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  6. If cos alpha =(3)/(5) and cos beta =(5)/(13) and alpha, beta are acut...

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  7. If alpha,beta are the solutions of the equation acostheta+bsintheta=c...

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  8. If alpha,beta are the solutions of the equation acostheta+bsintheta=c...

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  9. If A is not an integral multiple of (pi), prove that cos A cos 2A cos ...

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  10. Solve sin x + sqrt(3) cos x = sqrt(2).

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  11. Solve that sqrt(2)(sinx+cosx)=sqrt(3)

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  12. Solve 2 cos^(2) theta - sqrt(3) sin theta + 1 = 0.

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  13. Solve 2 cos^(2) theta + 11 sin theta = 7.

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  14. Solve sin theta + sin 5 theta = sin 3 theta , 0 lt theta lt pi.

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  15. Solve 1+sin^2 theta=3sin thetacostheta

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  16. Solve tan theta + 3 cot theta = 5 "sec" theta.

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  17. If acos2theta+bsin2theta=c" has "theta(1),theta(2) as its solutions ...

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  18. Given pnepmq . Show that the solutions of cosPtheta+cosqtheta=0 for...

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  19. Prove that Sin^-1""3/5+Sin^-1""8/17=Cos^-1""36/85

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  20. P.T. Cos^(-1)((4)/(5))+Sin^(-1)((3)/(sqrt34))=Tan^(-1)((27)/(11)).

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