Finding a triangles angles from its area + 2 sides

rought · Feb 9, 2009

Homework Statement

A triangle had area of 21 cm² and two of its sides are 9 cm and 14cm long.
Find the possible measures of the angle formed by these sides?

Area= 1/2abSin(C)

1/2 (9)(14)Sin C = 21 --> Sin C = (1/3)

approx 19.5 or 160.5

I'm just not sure if i did it right does this seem correct?

AssyriaQ · Feb 9, 2009

rought said:

I'm just not sure if i did it right does this seem correct?

Seems correct.