The longest side of a triangle are 13 ft., 15 ft., and 11 ft.. Find the measure of the opposite longest side. Round your answer to the nearest degree.

Question

A. 46 degrees
B. 58 degrees
C. 77 degrees
D. 103 degrees

Answer 1

I'll disregard the garbled language, and just note that the largest angle will be opposite the longest side. Thus, it will be between the two shortest sides. So, using the law of cosines,
15^2 = 11^2 + 13^2 - 2*11*13 cosθ

Answer 2

rip dude