Question

calculate the Dot product of c=(-4,-9) and d= (-1,2).do the vector form acute angel, right angle obtuse angle? ​

Answer 1

Answer:Solution: Using the component formula for the dot product of two-dimensional vectors,

a⋅b=a1 b1+a2 b2,

we calculate the dot product to be

c⋅d=−4(−1)−9(2)=4−18=−14.

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