Question

In Exercises 1-4, find the exact values of the six trigono-

metric functions of the angle shown in the figure. (Use the
Pythagorean Theorem to find the third side of the triangle.)
1.
2.
0
8
6
0
13
5


Only number 1 and 2

Answer 1

1. 10

2. 12

Explanation:

1. 8² + 6² = y² (Taking the unknown side as y)

64 + 36 = 100

y² = 100

y = 10

2. 5² + x² = 13² (Taking the unknown side as x)

x² = 13² - 5²

= 169 - 25

= 144

x² = 144

x = 12