I need to know how and how I know the rule but don't know what to do with the 2 before the inverse trig functions eah time. Thanks
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Originally Posted by bobby I need to know how You need the identity and replacing by , . So . Surely you know what is? and how I know the rule but don't know what to do with the 2 before the inverse trig functions eah time. Thanks
Thanks very much HallsofIvy
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