Evaluate the dot product of (7, 5) and (- 5, 4)

The dot product of (7,5) and (-5,4) is -15

Step-by-step explanation:

Given

(7,5) and (-5,4)

Required

Determine the dot product

Dot product is calculated using the following formula;

Let a = (7,5) and b = (-5,4);

The above formula becomes

Hence, the dot product of (7,5) and (-5,4) is -15

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse