Atriangular lot has sides of 215m, 185m, and 125m. find the measures of the angles at its corners

The measures of the angles at its corners are

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle A

Applying the law of cosines

step 2

Find the measure of angle B

Applying the law of cosines

step 3

Find the measure of angle C

Applying the law of cosines

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer