cosa+cosb=0=sina+sinb,thenProve that cos2a+cos2b+2cos(a+b)=0
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Answered by
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Given..
Cos a + cos b =0
Squaring both the sides..
(Cos a + cos b)^2 = (0)^2
= cos2a+cos2b+2cos (a+b) = o
Hence proved
Hope it helps...
kumarkshitij552:
its non of your fault the asker must have clearly asked the question maybe that your answer is right
Thanks ... but ..
but .. what??
Nothing leave it
ok as you wish
Thanks
for??
For understanding..
it was not worth of saying thanks helping someone in his trouble is the main aim of brainly
Oh nice thought..
Answered by
5
Here is your answer mate.
Hope it helps.
Hope it helps.
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