1.

In the formula 2cos(A/2) =​±​√(1 + sinA) ​±​√(1-sinA) find within what limits A/2 must lie ​ when(i) The two signs are positive(ii) The two signs are negative(iii) One is positive and one negativeWithout squaring

Answer» In the formula 2cos(A/2) =​±​√(1 + sinA) ​±​√(1-sinA) find within what limits A/2 must lie ​ when
(i) The two signs are positive
(ii) The two signs are negative
(iii) One is positive and one negative
Without squaring


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