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If alpha,beta,gamma,delta are the small...

If `alpha,beta,gamma,delta` are the smallest positive angles in ascending order of magnitude which have their sines equal to the positive quantity `k ,` then the value of `4sin(alpha/2)+3sin(beta/2)+2sin(gamma/2)+sin(delta/2)` is equal to (a)`2sqrt(1-k)` (b) `2sqrt(1+k)` (c)`(sqrt(1-k))/2` (d) none of these

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