The resultant of two vectors A- and B- is at right angles to A- and Vector A- magnitude is half of B- Find the angle between A- and B- in degrees

Right angle means dot product is zero.Thus, (A⃗ +B⃗ ).A⃗ = 0, i.e. A ^ 2 + ABcosθ = 0. #160;Given: A= B2 which gives A ^ 2 + A.2A.cosθ = ...

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The resultant...

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The resultant of two vectors $\to A$ and $\to B$ is at right angles to $\to A$ and Vector $\to A$ magnitude is half of $\to B .$ Find the angle between $\to A$ and $\to B$ in degrees

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