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Prove that sin x=2^(10) sin((x)/(2^(10))...

Prove that `sin x=2^(10) sin((x)/(2^(10))) cos (x/2) cos (x/2^(2))......cos((x)/(2^(10)))`.

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FULL MARKS-TRIGONOMETRY-Exercise 3.12
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  10. Which of the following is not true?

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  13. If cos ptheta + cos qtheta = 0 and if p ne q, then theta is equal to (...

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  20. If sin alpha + cos alpha = b, then sin 2alpha is equal to

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