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Answer to Question #7146 in Calculus for maria pretty

Question #7146
My dear Expert please solve the following question.
what is fundamental law of trigonometry
Expert's answer
Dear visitor
This question has been already answered. You can use search to find out if your question is there in our database.
Anyway, the answer is that by "fundamental theorem of trigonometry" is often meant sin2(x) + cos2(x) = 1, it is actually the Pythagorean Theorem. if you have a right
triangle with a hypotenuse of one, sin(x) is one leg, and cos(x) is the
other. The Pythagorean Theorem states that a2 + b2 = c2 and therefore sin2(x) + cos2(x) = 1.

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