Prove
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Originally Posted by Punch Prove Identities used were: These really are not difficult... simply expand and use a list of trigonometric identities
Originally Posted by Defunkt Identities used were: These really are not difficult... simply expand and use a list of trigonometric identities Sometimes, I am really stucked at proving, I have a phobia of it and was stucked when I got to \frac{cos2A-1}{sin2A}... Seems like I need more practise in proving, give me tips/comments if you have any
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