Exercises - Inverse Trigonometric Functions

  1. Find the values of the following:

    1. $\arcsin 0$

    2. $\textrm{arccot}\, (-\frac{\sqrt{3}}{3})$

    3. $\cot(\textrm{arccot}\,(-3))$

    4. $\cos(\arccos \frac{4}{5})$

    5. $\textrm{arccsc}\, 2$

    6. $\arccos (-1)$

    7. $\csc(\arcsin \frac{3}{5})$

    8. $\textrm{arcsec}\, (\sin \frac{\pi}{2})$

    9. $\sin (\textrm{arcsec}\, 2)$

    10. $\arccos (-\frac{1}{2})$

    11. $\arctan^3 (-\sqrt{3})$

    12. $3\arcsin^2 (\frac{\sqrt{3}}{2})$

    13. $\textrm{arcsec}\, 0$

    14. $\sin(\arctan 2)$

    15. $\arccos(\sin(-\frac{\pi}{6}))$

    16. $\tan(\arccos(-\frac{2}{3}))$

    17. $\arccos 2$

    18. $\cos(\arcsin(-\frac{4}{5}))$

    19. $4 \arctan 1$

    20. $\csc(\textrm{arcsec}\, 12)$

    21. $\textrm{arccsc}\, \sqrt{2}$

    22. $\textrm{arcsec}\, 2$

    23. $\arctan(\sin \frac{\pi}{2})$

    24. $\arctan(\cos \pi)$

    25. $\arcsin (\tan \frac{\pi}{4})$

    1. $0$

    2. $\frac{2\pi}{3}$

    3. $-3$

    4. $\frac{4}{5}$

    5. $\frac{\pi}{6}$

    6. $\pi$

    7. $\frac{5}{3}$

    8. $0$

    9. $\frac{\sqrt{3}}{2}$

    10. $\frac{2\pi}{3}$

    11. $-\frac{\pi^3}{27}$

    12. $\frac{\pi^2}{3}$

    13. no value

    14. $\frac{2}{\sqrt{5}}$

    15. $\frac{2\pi}{3}$

    16. $-\frac{\sqrt{5}}{2}$

    17. no value

    18. $\frac{3}{5}$

    19. $\pi$

    20. $\frac{12}{\sqrt{143}}$

    21. $\frac{\pi}{4}$

    22. $\frac{\pi}{3}$

    23. $\frac{\pi}{4}$

    24. $-\frac{\pi}{4}$

    25. $\frac{\pi}{2}$

  2. Write the given expression in terms of $x$ without any trigonometric functions:

    1. $\sin(\arctan x)$

    2. $\tan(\arcsin x)$

    3. $\cot(\arcsin x)$

    4. $\cos(\arcsin x)$

    5. $\cos(\textrm{arcsec}\, x)$

    6. $\csc(\textrm{arccot}\, \frac{x}{4})$

    1. $\displaystyle{\frac{x}{\sqrt{x^2 + 1}}}$

    2. $\displaystyle{\frac{x}{\sqrt{1-x^2}}}$

    3. $\displaystyle{\frac{\sqrt{1-x^2}}{x}}$

    4. $\displaystyle{\sqrt{1-x^2}}$

    5. $\displaystyle{\frac{1}{x}}$

    6. $\displaystyle{\frac{\sqrt{x^2 + 16}}{4}}$

  3. Write the given expression in terms of $x$ without any trigonometric functions:

    1. $\sin(\arctan x)$

    2. $\tan(\arcsin x)$

    3. $\cot(\arcsin x)$

    4. $\cos(\arcsin x)$

    5. $\cos(\textrm{arcsec}\, x)$

    6. $\csc(\textrm{arccot}\, \frac{x}{4})$

    1. $\displaystyle{\frac{x}{\sqrt{x^2 + 1}}}$

    2. $\displaystyle{\frac{x}{\sqrt{1-x^2}}}$

    3. $\displaystyle{\frac{\sqrt{1-x^2}}{x}}$

    4. $\displaystyle{\sqrt{1-x^2}}$

    5. $\displaystyle{\frac{1}{x}}$

    6. $\displaystyle{\frac{\sqrt{x^2 + 16}}{4}}$