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how do i solve

(tan(82)+tan(53))/(1-tan(82)tan(53))

 Mar 15, 2017
 #1
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+5

Note

 

[ tan A + tan B ] / [ 1 - tanAtanB]   =  tan (A + B)

 

So

 

(tan(82)+tan(53))/(1-tan(82)tan(53))   =  tan (82 + 53)   =  tan ( 135) =   -1

 

 

 

cool cool cool

 Mar 15, 2017

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