a. $\tan 3x\cot 2x= 1$
b. $\tan\left ( x+\frac{\prod }{3} \right ) \tan \left ( 2x-\frac{\prod }{4} \right )= 1$
Edited by chanyeoll, 10-09-2016 - 16:10.
a. $\tan 3x\cot 2x= 1$
b. $\tan\left ( x+\frac{\prod }{3} \right ) \tan \left ( 2x-\frac{\prod }{4} \right )= 1$
Edited by chanyeoll, 10-09-2016 - 16:10.
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