Question Number 46029 by rajabhay last updated on 20/Oct/18
Commented by rajabhay last updated on 20/Oct/18
$$\mathrm{tan}^{−\mathrm{1}} \frac{\mathrm{3}}{\mathrm{4}}\:\mathrm{is}\:\mathrm{answer}\:\mathrm{given}\:\mathrm{in}\:\mathrm{book}. \\ $$$$\mathrm{Please}\:\mathrm{help}. \\ $$$$ \\ $$$$\mathrm{I}\:\mathrm{did}\:\mathrm{the}\:\mathrm{following} \\ $$$$\mathrm{3}.\mathrm{25}\:\mathrm{cos}\:\theta+\mathrm{1sin}\:\theta=\sqrt{\mathrm{3}}\:\mathrm{cos}\:\mathrm{30}°−\mathrm{1sin}\:\mathrm{30}° \\ $$