Question

Determine the value "x" in the triangle below a) 5.5b) 5.3c) 7.8d) 16.2

Answer 1

In order to determine the value of x, use the cosine function, as follow:

cos 18° = x/17

solve the previous equation for x and simplify:

x = 17·cos 18°

x = 17·0.95

x = 16.2

Hence, the value of x is x = 16.2