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 Zayed35 Posts: 1, Reputation: 1 New Member #1 Feb 4, 2020, 11:39 AM
Trigonmetric function
How i can sove the problem given below:
(Cosx-Cos2x)/1-cosx
 ebaines Posts: 12,131, Reputation: 1307 Expert #2 Feb 4, 2020, 09:10 PM
What do you mean by “solve this?” Do you mean simplify?

What you wrote is this:

$\frac{\cos x - \cos (2x)}{1 - \cos x }$

I wonder if what you actually meant is this:

$\frac{\cos x - \cos ^2x}{1 - \cos x }$

Please clarify.

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