Trigonometry: A Complete Introduction Chapter 2 Sine and Cosine 2.1 Problem 14

In a right-angled triangle, the hypotenuse has length 7.4cm, and one of the other sides has length 4.6 cm. Find the smallest angle of the triangle.

The Pythagorean Theorem can be used to find the unknown side. It is also unknown which side, between the Adjacent and Opposite, has a value of 4.6cm. Using the inverse of Sine (or Sin^-1(4.6/7.4)), I was able to find the smallest angle indicated by the book.

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