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Which trigonometric identitiy are used to transform 2(cos(x))^2+2cos(x)sin(x) into 0?

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- Thread starter kasse
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- #1

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Which trigonometric identitiy are used to transform 2(cos(x))^2+2cos(x)sin(x) into 0?

- #2

Curious3141

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If you want to solve the equation [tex]2\cos^2 x + 2\cos x \sin x = 0[/tex] that's a different matter entirely. So what is it you want to do?

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Sorry, I gave you the wrong eq. Solved in on my own here.

What's up in Singapore?

What's up in Singapore?

- #4

Curious3141

Homework Helper

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Sorry, I gave you the wrong eq. Solved in on my own here.

What's up in Singapore?

Mostly the sky, I guess. :tongue2:

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