Question

In ΔABC, if the length of side b is 3 centimeters and the measures of and are 45° and 60°, respectively, what is the length of side c to two decimal places?
A) 2.45 centimeters

B) 3.67 centimeters

C) 4.00 centimeters

D) 5.45 centimeters

Answer 1

We can calculate a side of a triangle if the side's opposite angle, another side and its opposite angle are known using the Sine rule:
a/sin(A) = b/sin(B) = c/sin(C)