trigonometric identities

powerpoint presentation remember an identity is an equation that is true for all defined values of a variable. we are going to use the identities that we have already established to "prove" or establish other identities. let's summarize the basic identities we have. reciprocal identities   sin 1 cosec    cos 1 sec    tan 1 cot  quotient identities    cos sin tan     sin cos cot   22 sec 1tan   22 cosec cot1  pythagorean identities 1 cossin 22   even-odd identities               cotcotsecseccoseccosec tantancoscossinsin    22 sincoscosecsin establish …

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