Asked by alexa
Can you use the Cosine Law, c^2=a^2+b^2-2ab.cos C, to find the length of the hypotenuse in a this right triangle if you know the lengths of the legs of the triangle ? Why ?
Answers
Answered by
oobleck
of course. cos 90ยบ = 0
so now you just have the Pythagorean Theorem.
so now you just have the Pythagorean Theorem.
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