find the values of sin 2alpha when cos alpha =3/5
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Answered by
7
I hope the answer is 4/5
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abhivarshitha:
at last step again how did you get 16
1-9/25=(25-9)/25=16/25.....ok
ok thank you
Answered by
17
cos alpha=3/5
sin alpha=√1-cos^2alpha
=√1-(3/5) ^2
=√16/25
=4/5
sin 2 alpha =2sin alpha. cos alpha
=2(4/5)(3/5)
sin 2 alpha = 24/25.
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