LyzaTeal's answer to Juned Sayyad's Junior College 2 H1 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
LyzaTeal
Lyzateal's answer
12 answers (A Helpful Person)
1st
Here's my answer, hope it helps! :)
-Xin
Tham KY
Tham KY
6 years ago
Next step should be 90°-deta, because the normal vector of plane is used. The deta is between line and normal of plane...