Answers

2016-02-21T21:42:04+05:30
Applyin tan(a-b)=tan(45-30)=tan45-tan30/1+tan45*tan30
therefore tan 15=square root of 3-1/square root of 3+1
after rationalisin we get tan 15=2-square root of 3



hope ur query gets solved by my ans......
cheers..................
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