Find a · b. |a| = 80, |b| = 50, the angle between a and b is 3π/4.

Step-by-step explanation:

Given information: |a| = 80, |b| = 50, the angle between a and b is 3π/4.

We need to find the dot product  a · b.

The formula of dot product is

where, θ is the angle between a and b.

Substitute the given values in the above formula.

Rationalize the above equation.

Therefore, the value of a · b is .

black lol

step-by-step explanation:

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tommy has 2.

this made me lol.