From the given information, determine which trigonometric formula to use when solving for the unknown side.

Question

From the given information, determine which trigonometric formula to use when solving for the unknown side.

 

  

sin θ = opphyp

cos θ = adjhyp

tan θ = oppadj

a² + b² = c²

Answer 1

Hi Devlin A

In your Right Triangle your are given an angle 4.5 degrees and the side opposite the angle.

You want to solve the side adjacent to the 4.5 degree angle, since the tangent of an angle in a Right Triangle is

Opp/adj

The Tangent of 4.5 degree can be use to solve for x

Tan(4.5°) = 80/x

Can you solve for x?

Try.