Answers

2016-02-09T18:32:29+05:30
Sin 5A=cos 4A
So,cos(90-5A)=cos 4A
=>90-5A=4A
=>9A=90
=>A=10

hence 2sin3A-3tan3A=2sin30-3tan30
=2(1/2)-3(1/sqrt3)
=1-sqrt3
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