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Geometry/Trig help please?

Part a) Show the equation you set up to solve for AB.

Part b) What is the length of AB

Part c) Show the equation you set up to solve for m<B
Part d) What is the m<B

Geometry/Trig help please? Part a) Show the equation you set up to solve for AB. Part b) What is the length of AB Part c) Show the equation you set up to solve class=

Answer :

AB^2 = 55^2 + 108^2 -2×55×108×cos(59deg)
AB = 92.6 m


sinB/55 = sinC/92.6
B = 30.61 = 31 degrees

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