Boy Mow Chau's answer to Qianqi Zhao's Junior College 1 H2 Maths Singapore question.
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for part (i)
… since points A, B & C lie in H1, so vectors AB & AC will also lie in H1.
… cross product of AB & AC gives us direction of normal of H1.
… dot product of any point on H1 with the normal of H1, will give us equation of H1 in scalar product form.
… since points A, B & C lie in H1, so vectors AB & AC will also lie in H1.
… cross product of AB & AC gives us direction of normal of H1.
… dot product of any point on H1 with the normal of H1, will give us equation of H1 in scalar product form.
Date Posted:
4 years ago
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