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# C2- sin/cos/tan Watch

1. Quick question- why does the three not get cancelled out?

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2. (Original post by Questioness)
Quick question- why does the three not get cancelled out?

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Because you are mutliplying the theta by 3, not the entire trig function by 3.

In general . e.g. but .
3. (Original post by Questioness)
Quick question- why does the three not get cancelled out?

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To recast the question to you: Why do you think the 3 should cancel?
4. Let Now do the question and see...
5. (Original post by Farhan.Hanif93)
To recast the question to you: Why do you think the 3 should cancel?
Oh, I think I understand this now. So, if it were to divide by just costheta and not cos3theta then it wouldn't make tan3theta.

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