Trigonometry, Cosine Rule, IB Math HL

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Trigonometry, Cosine Rule, IB Math HL

Postby Oliver » Wed Jan 29, 2014 7:20 am

IB Mathematics HL – Trigonometry, Cosine Rule

How can we solve the triangle using Cosine Rule given that , and .


Thanks
Oliver
 
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Re: Trigonometry, Cosine Rule, IB Math HL

Postby miranda » Wed Jan 29, 2014 7:20 am

IB Math HL – Trigonometry, Cosine Rule

Applying the Cosine Rule we have that









Now, in order to find another angle, for example , we could apply again cosine rule and solve for as following















Finally, for the angle we have that




Hope these help!! :) :)
miranda
 
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Re: Trigonometry, Cosine Rule, IB Math HL

Postby Oliver » Wed Jan 29, 2014 7:21 am

Thank you miranda!!
Oliver
 
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