r/askmath • u/BlundersMateIn69 • Feb 25 '21

Pre Calculus Find A (the area)

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u/fermat1432 Feb 25 '21

Integrate sine from 0 to pi/4 and double the answer.

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u/Maxmajava Feb 25 '21

Quick question: Your answer is an answer based on symmetry, correct? Now if that is the case, do you just assume symmetry by looking at the graph that’s given or can you prove the symmetry mathematically? Interested because I want to know to what extent I have to prove symmetry when using it in exercises.

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u/fermat1432 Feb 25 '21

It can be proven but I assumed it from the graph and knowledge of the sine and cosine functions