if sina= 1/2 find the value of 3 sin a 4 cos cube A
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hey here is you ans....
it is given tha sin a=1/2
so just directly put the vale of sin a at the place where we have to solve and to find the valu of cos we can find it from the value of sin as we have done it in first exercise of ncert ch trignometry.....
=3×1/2×4×(root 3)cube
=6×3 root 3
=18 root 3 is the ans...
and value of cos is root 3
hope you understand...
it is given tha sin a=1/2
so just directly put the vale of sin a at the place where we have to solve and to find the valu of cos we can find it from the value of sin as we have done it in first exercise of ncert ch trignometry.....
=3×1/2×4×(root 3)cube
=6×3 root 3
=18 root 3 is the ans...
and value of cos is root 3
hope you understand...
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