Question
Maths
April 20, 2019, 7:25 p.m.
Answer
A scalene triangle whose side are 20cm, 30cm and x cm it's area is 430 sq cm. Find the value of x
O is a point in the interior of a triangle abc,od perpendicular bc,oe perpendicular ac and of perpendicular ab. Show that 1.oa^2+ob^2+oc^2-od^2-oe^2-of^2 =af^2 +bd^2+ce^2
Determine if the following vectors are orthogonal, parallel, or neither. a) a = -3, 9, 6 , b = 4, -12, -8
