91Ó°ÊÓ

Find all angles in the interval \(\left[0^{\circ}, 360^{\circ}\right]\) that satisfy each equation. Round approximations to the nearest tenth of a degree. $$ \tan \alpha=-2.31 $$

Find all real numbers in the interval \([0,2 \pi)\) that satisfy each equation. $$ \cot (3 x)+1=0 $$

Find all real numbers in the interval \([0,2 \pi)\) that satisfy each equation. Round approximate answers to the nearest tenth. $$ 3 \sin ^{2} x=\sin x $$

Find all angles in the interval \(\left[0^{\circ}, 360^{\circ}\right]\) that satisfy each equation. Round approximations to the nearest tenth of a degree. $$ \cos (\alpha)-\sqrt{3}=0 $$

Find the exact value of each expression when possible. Round approximate answers to three decimal places. $$ \arctan (1 / \sqrt{3}) $$

Find the exact value of each expression when possible. Round approximate answers to three decimal places. $$ \arctan (1) $$

Find all real numbers in the interval \([0,2 \pi)\) that satisfy each equation. Round approximate answers to the nearest tenth. $$ 2 \tan ^{2} x=\tan x $$

Find all real numbers in the interval \([0,2 \pi)\) that satisfy each equation. Round approximate answers to the nearest tenth. $$ 2 \cos ^{2}(x)=3 \cos (x) $$

Find the exact value of each expression when possible. Round approximate answers to three decimal places. $$ \tan ^{-1}(\sqrt{3}) $$

Find the exact value of each expression when possible. Round approximate answers to three decimal places. $$ \tan ^{-1}(-\sqrt{3}) $$