Question

What is the value of x in the trangle? Enter your answer in the box. Round your final answer to the nearest hundredth.​

Answer 1

Use trigonometry.

cos(18°) = x/25

Multiply both sides by 25.

cos(18°)25 = x

23.7764129074 = x

We round off to the nearest hundredth. This means to round off to two decimal places.

Doing so, we get 23,78 cm = x.