4 years ago

Please help :( Find X. Round to the nearest tenth.

Mathematics

1 answer:

g100num [7]4 years ago

6 0

90^2 = 55^2 + 50^2 - 2(55)(50)cosX
(90^2 - 55^2 - 50^2)/(2(55)(50)) = cosX
X = 62.1°

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