5. Law of Sines
Sign In
The Law of Sines relates the sine of each angle to the length of the opposite side.
x=2.1 and y=3.6
For any △ ABC, let the lengths of the sides opposite to angles A, B, and C be a, b, and c, respectively.
Let's use this law to find the values of x and y. We will find them one at a time.
Consider the given triangle.
Cross multiply
.LHS /sin 119^(∘).=.RHS /sin 119^(∘).
Use a calculator
Round to 1 decimal place(s)
In order to obtain the value of y, we will first have to find the third interior angle using the Triangle Angle Sum Theorem. 180^(∘)- 119^(∘)- 22^(∘)= 39^(∘) Consider the triangle with the new information.