further vectors

[neon coral]

can someone explain q11a to me please?

,rotate

[neon coral]

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[silk ice]

because sin of 90 = 1

as both of p and q are perpendicular

the cross product of p and q is equal to the area of the parallelogram that p and q forms

to find out whats the area of the parallelogram u work out the area of the triangle and multiply it by 2

because the angle is 90 it makes 1

[neon coral]

aha makes sense

[neon coral]

this is helpful