a/b+b/a=4; a/b2+ b2/a =?
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Answer:
a+ b =c , so a+b+c=12 so the correct method is defined
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Answer: Don't know if this will help but this is what I got when I looked it up
Step-by-step explanation:The cosine of a right angle is 0, so the law of cosines, c2 = a2 + b2 – 2ab cos C, simplifies to becomes the Pythagorean identity, c2 = a2 + b2, for right triangles which we know is valid.
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Case 3.
c2 = d2 + h2
cos C = e/b
d2 = (e — a)2
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