SOLUTION: This is a triganometry promblem using Law of Cosines.Given a triangle with b=4, c=7, and A=50 degrees, what is the lenght of a? Round answer two decimal places.
Thanks for your he
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Question 188645: This is a triganometry promblem using Law of Cosines.Given a triangle with b=4, c=7, and A=50 degrees, what is the lenght of a? Round answer two decimal places.
Thanks for your help!!!!
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Applicable form of the Law of Cosines:
)
or, more to the point for this problem:
})
Substitute your values:
^2 + (7)^2 - 2(4)(7)\,\cos(50)})
Get out your calculator and have at it. Remember to round to the nearest hundredth.
John
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