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The maximum value of `5 sin theta+3 sin (theta + pi/3) + 3` is -A. `alpha = 2n pi+(pi)/(3), n epsilon I`B. `alpha = 2n pi +-(2pi)/(3), n epsilon I`C. `alpha epsilon [(pi)/(3), (2pi)/(3)]`D. `alpha = n pi+(-1)^(n)(pi)/(3), n epsilon I` |
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Answer» Correct Answer - A If for `theta epsilon R`, …………… `(5+3soc alpha)sin theta-3sin alpha.cos theta+3` `sqrt((5+3cos alpha)^(2)+9sin^(2)alpha)+3=10` `implies cos alpha = (1)/(2)` |
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