Math, asked by RUCHIKARR2091, 1 year ago

cosa+cosb=0=sina+sinb,thenProve that cos2a+cos2b+2cos(a+b)=0

Answers

Answered by usarahsiddiqui54

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

usarahsiddiqui54: Thanks ... but ..

kumarkshitij552: but .. what??

usarahsiddiqui54: Nothing leave it

kumarkshitij552: ok as you wish

usarahsiddiqui54: Thanks

kumarkshitij552: for??

usarahsiddiqui54: For understanding..

kumarkshitij552: it was not worth of saying thanks helping someone in his trouble is the main aim of brainly

usarahsiddiqui54: Oh nice thought..

Answered by kumarkshitij552

Here is your answer mate.
Hope it helps.

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