29+ When To Use Law Of Sines And Cosines Most Popular

29+ When To Use Law Of Sines And Cosines
Most Popular. The law of sines (or sine rule ) is very useful for solving triangles: The question here is why are those laws valid? this is an optional section.

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That is, could you use these laws instead of the sine=opposite/hypotenuse, cosine=adjacent/hypotenuse, and tangent=opposite/adjacent rules to solve right triangles? We saw in the section on oblique triangles that the law of cosines and the law of sines were useful in solving for parts of a triangle if certain other parts are known. Tutorial on the law of sines and cosines and on how to decide which formula to use in triangle problems.

If you are not given a picture, draw one.

Let c stand for the angle at c and so on. You determine which law to use based on what information you have. The question here is why are those laws valid? this is an optional section. This technique is also known as triangulation.