how to solve this question
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answer will be 30. according to me
Aayushgupta11:
make me a brain list please
Answered by
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ans is 60, according to me
because |a+b|= √a^2+b^2-2abcos thela.....1
so from equation 1,
a^2+a^2-2aacos theta=a^2
2a^2-2a^2cos theta=a^2
2(1-cos theta)=1
cos theta =1-(1/2)
= 1/2
theta=60=π/3
because |a+b|= √a^2+b^2-2abcos thela.....1
so from equation 1,
a^2+a^2-2aacos theta=a^2
2a^2-2a^2cos theta=a^2
2(1-cos theta)=1
cos theta =1-(1/2)
= 1/2
theta=60=π/3
is it correct then
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is it correct
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