Question

Abc is a triangle and xy is parallel to bc if xy=2 cm and ac=6 cm then bc=

Answer 1

area of y = cos (x) from o to x is given below
cos x d x

(cos x do ) ×(cos x dx)

sin - sin o +:sin -sin

1-0+0-1
= 0

if you take the sign convention then the area will be . but the magnitude of
that area is =1+1=2