if sin a = 1÷2 hen find the velue of 3 sin a-4sin3
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sin a = 1/ 2___________ Eq no 1.
3 sin a = 3/2.
4 sin 3= 4 sin a → a = 3
4 sin 3= 4 sin3.
put value of a= 3 in Eq no 1 , we get
sin 3 = 1/2
3 sin a - 4 sin 3= 3/2 - 4 /2
=( 3-4)/ 2 [ Taken LCM ]
= -1/2.
3 sin a = 3/2.
4 sin 3= 4 sin a → a = 3
4 sin 3= 4 sin3.
put value of a= 3 in Eq no 1 , we get
sin 3 = 1/2
3 sin a - 4 sin 3= 3/2 - 4 /2
=( 3-4)/ 2 [ Taken LCM ]
= -1/2.
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