1.

Evaluate: (i) "sin""(3pi)/(8) (ii) "sin""(5pi)/(24) (iii) "tan""(pi)/(8).

Answer»


ANSWER :(i) `(sqrt(2+sqrt2))/(2)`
(II) `(sqrt(6+3sqrt2)-sqrt(2-sqrt2))/(4)`
(III) `sqrt2-1`


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