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If sin 3a=1/2 then sin a=? Help me! Provide answer asap

If sin 3a=1/2 then sin a=?
Help me!
Provide answer asap

Grade:10

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Dear student

sin 3a = 3 sina – 4 sin^3 a

0.5 = 3x -4x^3

where x is sin a

solving cubic polynomial

sin a =Solutions for x:
x1= 0.76604
x2= -0.93969
x3= 0.17365

Regards

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