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☬ BRAINLY CONQUERER ☬
╘═════════════════════╛
Hey, buddy i had already solved this but still you can see here
The solution is in the attachment
╒══════════════════════╕
☬ THANKS! Regards ☬
╘══════════════════════╛
☬ BRAINLY CONQUERER ☬
╘═════════════════════╛
Hey, buddy i had already solved this but still you can see here
The solution is in the attachment
╒══════════════════════╕
☬ THANKS! Regards ☬
╘══════════════════════╛
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L.H.S= (m2+n2)cos2b
= {(cosa/cosb)2 +(cosa/sinb)2}cos2b
= {(cos2a/cos2b) +(cos2a/sin2b)}cos2b
= (cos2a.sin2b +cos2a.cos2b / cos2b.sin2b)cos2b
= cos2a(sin2b+cos2b) / sin2b
= cos2a / sin2b
R.H.S= n2
=(cosa/sinb)2
= cos2a / sin2b
Therefore, L.H.S=R.H.S
Amish455:
randî
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