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Given that P=Q=R. if vecP+vecQ=vecR then...

Given that `P=Q=R`. if `vecP+vecQ=vecR` then the angle between `vecP & vecR` is `theta_(1)` and `vecP+vecQ+vecR=0` then the angle between `vecP & vecR` is `theta_(2)`. What is the relation between `theta_(1)` and `theta_(2)`.

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Least count of varnier calliper is `0.01 cm` Hence it matches with the reading.
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