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➷ Use the cosine rule
a^2 = b^2 + c^2 - 2bc x cosA
Substitute the values in:
a^2 = 9^2 + 6^2 - 2(9)(6) x cos(37)
a^2 = 30.74736491
Square root it:
a = 5.5403065
Therefore, the correct option would be 5.5
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
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