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رسم نمودار تانژانت به کمک دایره مثلثاتی
The same question 
رسم نمودار تانژانت به کمک دایره مثلثاتی
cosine ???
tangent curve??? not sure I understand, but would be willing to learn...
Hi
I think a mistake in naming the post.
cosine is written instead of tangent
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