Question

V, )
Vi lese
2. If two vertices of a triangle are (1, 3) and (4.-1).
area of triangle is 5 sq. units, then the angle
vertex lies in
hen the angle at the thin​

Answer 1

Answer:

Step-by-step explanation:

Given vertices of triangle are (1, -3), (4, p) and (-9, 7)

and area of triangle is 15sq. units

to find the value of p

(1/2) * [1(p - 7) + 4(7 + 3) - 9(-3 - p)] = 15

1(p - 7) + 4(7 + 3) - 9(-3 - p) = 15 * 2

p - 7 + 4 * 10 + 27 + 9p = 30

10p - 7 + 40 + 27 = 30

10p - 7 + 67 = 30

10p + 60 = 30

10p = 30 - 60

10p = -30

p=-30/10