Sas Law Of Cosines. When you have two sides of a triangle and the angle between them otherwise known as sas side angle side you can use the law of cosines to solve for the other three parts. A 2 5 2 7 2 2 5 7 cos 49 a 2 25 49 70 cos 49 a 2 74 70 0 6560.
A 2 b 2 c 2 2bc cosa. And c 7. A 2 74 45 924.
And c 7.
Consider the triangle abc where a is 15 c is 20 and angle b is 124 degrees. Use the law of cosines to find side a first. A 2 5 2 7 2 2 5 7 cos 49 a 2 25 49 70 cos 49 a 2 74 70 0 6560. Consider the triangle abc where a is 15 c is 20 and angle b is 124 degrees.
