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Find the angle between the following two vectors: <2, -5> and <4, 21>. Round your answer to the nearest degree. You do not need to include the degree symbol in your solution.

1 Answer

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To find the angle we have the formula

and we have that


\begin{gathered} \lvert{a}\rvert=√(4+25)=√(29) \\ \lvert b\rvert=√(16+441)=√(457) \end{gathered}

so we get that


\cos\alpha\approx-0.8425867691776014

Then


\alpha=147.41429264608558°

The answer is 147.41429264608558

Find the angle between the following two vectors: <2, -5> and <4, 21>. Round-example-1
User Jhrf
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