Question

FIND THE MEASURE OF THE ANGLE BETWEEN THE LINE x+y+7=0 and x-y+1=0 class 11

Answer 1

Answer:

angle=90°

Step-by-step explanation:

x+y+7=0, m1=-1/1=-1

x-y+1=0,m2=-1/-1=1

tanΦ=+or-( m1-m2/1+m1m2)

=+or-( -1-1/1+(-1)(1) )

=+or-(-2/1-1)

=+or-(-2/0)

tanΦ=Infinity

so theta=90°