Question

if x + y - z = 4 and x ^ + y^ + z^ = 30, then find the value of ( xy -yz - xz)​

Answer 1

Answer:

Correct option is

A

55,85.

Given, x,y and 40 are the angles of a triangle.

Therefore, x+y+40=180

x+y=140

The difference between the two angles x and y is 30.

Therefore, x−y=30 ....(2)

Add equations (1) and (2), we get

2x=170

⇒x=85

Substitute this value n equation (2), we get

85−y=30

⇒y=85−30

⇒y=55

Therefore, angles of a triangle are x=85, y=55 and 40.