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junior college 1 | H2 Maths
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Jn
Jn

junior college 1 chevron_right H2 Maths chevron_right Singapore

Can someone help with this? Thanks

Date Posted: 2 years ago
Views: 587

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Wee Wen Shih
Wee Wen Shih's answer
135 answers (Tutor Details)
1st
Part 1 of the solution, thank you.
Jn
Jn
2 years ago
How did u go from the first to the second line ?
Wee Wen Shih
Wee Wen Shih
2 years ago
If a x b = 0, then a = kb. This is an important result to be memorised.
Jn
Jn
2 years ago
Ohh thank u!
Wee Wen Shih
Wee Wen Shih
2 years ago
Vector product = 0, two vectors are parallel to each other, so a = kb

Scalar product = 0, two vectors are perpendicular to each other

That will make it easier to understand and recall any time ✌️
Jn
Jn
2 years ago
Okay thanks
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Wee Wen Shih
Wee Wen Shih's answer
135 answers (Tutor Details)
Part 2 of the solution, thank you!
Jn
Jn
2 years ago
Why is the angle 0?
Wee Wen Shih
Wee Wen Shih
2 years ago
L1 and L2 now lie in the same plane, so there has to be no angle.
Previously when they were on different planes, there will be some angle.
Jn
Jn
2 years ago
Thanks!!
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Wee Wen Shih
Wee Wen Shih's answer
135 answers (Tutor Details)
Corrected solution to part ii, in scalar product form. Thank you.