Find the Missing Angle Using Trigonometric Functions

$$x=\sin^{-1}\left(\frac{300}{400}\right)$$

$$x=\cos^{-1}\left(\frac{300}{400}\right)$$

$$x=\tan^{-1}\left(\frac{300}{400}\right)$$

$$x=\tan^{-1}\left(\frac{400}{300}\right)$$

$$37\degree$$

$$38\degree$$  

$$51\degree$$

$$49\degree$$

inverse sine

inverse cosine

inverse tangent

It is not possible to determine m<A

y = tan^–1(31/23)

y = sin^–1(31/23)

y = cos^–1(31/23)

Apply the inverse sine

Apply the inverse cosine

Apply the inverse tangent

Apply the Pythagorean Theorem

Inverse sine

Inverse cosine

Inverse tangent

Pythagorean Theorem

60.0°

30.0°

26.6°

63.4°