• question_answer In the given figure what is the value of$\mathbf{3sin}\theta +\mathbf{4cos}\theta$? A)  3                                B)  4              C)  5 D)  1

(c) $AC=\sqrt{{{3}^{2}}+{{4}^{2}}}=5$ $\therefore 3sin\theta +4cos\theta$ $=3\times \frac{3}{5}+4\times \frac{4}{5}$ $=\frac{9}{5}+\frac{16}{5}=\frac{25}{5}=5$