31,009 views
10 votes
10 votes
Find the measure of angle L. Round youranswer to the nearest degree.

Find the measure of angle L. Round youranswer to the nearest degree.-example-1
User Whittle
by
2.5k points

1 Answer

28 votes
28 votes

Given the triangle KLM, you can find the measure of angle L by using the Law of Sines. This states that:


(sinA)/(a)=(sinB)/(b)=(sinC)/(c)

Where "a", "b" and "c" are sides of the triangle, and "A", "B", and "C" are the angles.

In this case, you can set up this equation:


(sinK)/(k)=(sinL)/(l)

Knowing that:


\begin{gathered} m\angle K=22\text{\degree} \\ k=56 \\ l=26 \end{gathered}

You can substitute values into the equation and solve for "L". Remember the use the Inverse Trigonometric Function Arcsine, in order to solve for the angle:


(sin(22°))/(56)=(sinL)/(26)
(26\cdot sin(22°))/(56)=sinL
sin^(-1)((26\cdot sin(22°))/(56))=L
m\angle L\approx10°

Hence, the answer is:


m\angle L\approx10°

User Mattchenderson
by
2.7k points