Since the three angles of a triangle add to give 180°
The the size of the largest angle 4 = 180° ×
= 180° ×
∴ the size of the largest angle = 80°
The the size of the largest angle 4 = 180° ×
= 180° ×
∴ the size of the largest angle = 80°
Given vectors a=(-1,-2), b=(-2,3), c=(3,-1), d=(-3,2) find the dot product of b and d.
1 answer:
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