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OpenStudy (anonymous):
Given a triangle with b = 4, c = 10, and A = 84 degrees, what is the length of a? Round to the nearest tenth.
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OpenStudy (rsadhvika):
you may use cosine law a^2 = b^2 + c^2 - 2bc cos(A)
OpenStudy (anonymous):
thanks!
OpenStudy (rsadhvika):
yw
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