Question

Prove sin² + cos² = 1

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Answer 1

Question ⤵️

Prove sin² + cos² = 1

Answer ⤵️

Proof of the Trig Identity

[sin² + cos² = 1]

By the Pythagorean Theorem we have

Let's start with the Unit Circle

Finally, using substitution,we have

Label the sides of the Right Triangle

a²+b²=c²

create a right triangle inside the unit circle like

the one aside

Since this is a Unit Circle, we have

Hope it helps you ✌️

Step-by-step explanation:

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