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If `alpha` and `beta` are the solution of the equation, `a tantheta+bsectheta=c` then show that `tan(alpha + beta) =(2ac)/(a^2-c^2)`

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MODERN PUBLICATION-TRIGONOMETRY-Revision Exerise
  1. Prove that: cos^2A+cos^2(A+pi/3)+cos^2(A-pi/3)=3/2

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  4. If alphaa n dbeta are the solutions of acostheta+bs intheta=c , then s...

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  15. If x+y+z=x y z prove that (2x)/(1-x^2)+(2y)/(1-y^2)+(2z)/(1-z^2)=(2x)/...

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  16. If x y+y z+x z=1,then prove that x/(1-x^2)+y/(1-y^2)+z/(1-z^2)=(4x y...

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  18. Solve : (i) cos 3theta + 8 cos^(3) theta = 0 (ii) "tan" (pi cot x) ...

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