How do i solve the last part, about the length of projection of AB onto the plan

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junior college 1 | H2 Maths
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junior college 1 H2 Maths Singapore

How do i solve the last part, about the length of projection of AB onto the plane? Tks!

Date Posted: 3 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 3 years ago