Answer by
ramizq1 (185)

If it's a right angled triangle then you use Pythagoras Theorem, i. e : H^2=P^2+B^2 where P:Height, B:Base, H:Hypotenuse. You can also use Trigonometric Ratios for Sin/Tan to find height. If you are unsure then use the Area formula of a triangle: A = 1/2 x BH where, H = Height and B = Base.