If sin a=1/2,then find value of 3sin a - 4sin ^3 a
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Hi Mate!!!
Formula Sin ( 3a ) = 3 Sin ( a ) - 4 Sin³ ( a )
Exp :-
Sin ( a ) = Sin ( 30° )
a = 30°
=>
Sin ( 3a ) = Sin ( 90° ) = 1
Formula Sin ( 3a ) = 3 Sin ( a ) - 4 Sin³ ( a )
Exp :-
Sin ( a ) = Sin ( 30° )
a = 30°
=>
Sin ( 3a ) = Sin ( 90° ) = 1
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