hey, I was just wondering when i would use sine law, opposed to cosine law and vice-versa.
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You don't mean Law of Sines and Law of Cosines, right?
If you mean the law of sine, that is:
And the law of cosine:
Then you can use use either of them when you have a right triangle.
Which one depends on what you know, be it the opposite side, adjacent side, or the hypotenuse.
Originally Posted by jays-9 hey, I was just wondering when i would use sine law, opposed to cosine law and vice-versa.
Thanks! You use the law of sines when you have two known angles and one known side in a triangle (AAS, ASA).
Law of Sines:
You use the law of cosines when you have two known sides and one known angle (triangle is SAS).
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