Question

please hlp me out with this question.

Answer 1

Answer:

Step-by-step explanation:

it is very easy

if u know vectors

write the given points in vector form

so a=4i-2j

b=-4i+4j

c=10i+6j

find theta by

cos theta =(a . b)/IaI*IbI

(IaI REFERS TO THEIR MAGNITUDE)

(. refers to dot product)

SO a.b=-8+8=0

0/anything =0

cos theta=0

cos theta=cos 90

theta=90

hence proved

Answer 2

...hiiiii mate here is ur ans ....