3 years ago

How do you do this?

Mathematics

1 answer:

masya89 [10]3 years ago

5 0

Remeber y=mx+b that can be useful n get everything on other side of = but y

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4 years ago

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Step-by-step explanation:

To prove:

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$\cos 2A=\cos^2A-\sin^2 A$ .......(3)

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3 years ago