Tell me the answer fast guys
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Nikku0609:
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Bro can u tell me the answer of c
3a^2+b^2=(a+b)^2+(a-b )^2+2 (a+b)(a-b)costheta
solve this you will get the answer as 60 degrees
Bro I don’t know how u get a^2-b^2= 2 a^2 - b^2
For 3 a^2+b^2 = 2(a^2+b^2)+ 2(a^2-b^2)
For 3 a^2+b^2 = 2(a^2+b^2)+ 2(a^2-b^2)
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