IIT JEE , AIEEE Forum - Mathematics , Trignometry

spideyunlimited

use 1/2 * base * height
for base , find distance between any 2 coordinates using distance formula
PQ = root of [ (y2 - y1)^2 + (x2 - x1)^2 ]

now form the eqn of the side and using this line eqn and the given 3rd coordinate, find the point on this line such that the line formed by this point and the 3rd coordinate is perpendicular to the base.
( use m1.m2 = -1)

now use distance formula again on this point and the remaining given coordinate to find the height

and use the found values in the formula of 1/2 X base X height

*PLZ RATE *

Ask & Discuss Questions with Community & Experts