Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 4 | E Maths
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Ryani Nursyazwany
Ryani Nursyazwany

secondary 4 chevron_right E Maths

Help with qn11d and qn12... Urgent!!!! Thank you in advance

Date Posted: 6 years ago
Views: 417

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
May Min
May Min's answer
24 answers (Tutor Details)
1st
Vectors in each direction should equal to each other. For the second part, the two vectors are parallel if they are multiples of each other. I will upload 3rd part soon.
May Min
May Min
6 years ago
Sorry it should be AB = 2OD for part 2, not OA
Ryani Nursyazwany
Ryani Nursyazwany
6 years ago
Thank you
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
May Min
May Min's answer
24 answers (Tutor Details)
Use area of vector triangle = 1/2 |one of the sides||the other side| sin(angle), take note that i could cancel sin(angle) and sin(180-angle) out because sin(angle) = sin(180-angle) -> this is under the trigo rules