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Practice variation 3 of 3

Vectors — Component reading of sign

Your question

For and , which is true?

so the angle is obtuse
so the angle is acute
so the angle is right
The angle cannot be determined from the components

This practice question was inspired by Question 5 in the 2021 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.

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