geometry
posted by rishabh .
The sies of a triangle are 9cm, 12 cm and 15cm. Find the lenght of the perpendicular drawn to the side which is 15 cm.

Since the sides are in a 3:4:5 ratio, it is a right triangle. The right angle is between the sides with lengths 9 and 12.
The smallest angle is
A = sin^1(3/5) = 36.87 degrees.
The perpendicular to the hypotenuse is
12 sin A = 12*sin36.87 = 12*0.6 = 7.2 cm
Respond to this Question
Similar Questions

MATHSgeometry
how do you draw an obtuse angle triangle, construct the perpendicular bisector of each side Draw a triangle with one angle greater then 90 degrees. Find the midpoint of each side. Then draw a perpendicular to each side at each midpoint. … 
Math
Each side of a triangle ABC is 75 units long. Point D is the foot of the perpendicular drawn from A to side BC. Part E is the midpoint of line segment AD. Find BE. Show picture and work. 
geometry
A segment that is a units long makes a Cdegree angle with a segment that is b units long. In terms of a, b, and C, find the third side of the triangle defined by this SAS description. You have done numerical versions of this question. … 
geometry/math pls help
The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60degree angle at P. (1) Find the sizes of the other two angles of triangle PQR. (2) Find the length of the median drawn to side PQ. (3) Find … 
geometry
in a triangle the middle length side is 3 more than the shortest side, and the longest side is double the middle lenght side the perimeter of the triangle is 45cm find the lenghts of the side 
geometry
the sides of a triangle is 9,12,15cm..Find the sides of a similar triangle if the longest side is 20 cm 
math
3cm triangle,9cm triangle, 27cm triangle, If the pattern continues,and a fourth triangle is drawn,what would be the length of a side? 
Math
1. Which of the following best describes the altitude of a triangle? 
Math
If the sides of a disheveled triangle is 9cm, 9cm and 4cm, find the height on the shortest side. 
math neeeeed help plez help
trapezoid ABCD is congruent to trapezoid EFGH. Which statement is true. A B= 15cm DC 9cm A. side EF is 15cm B. side GH is 9cm C. side EF is 9cm D. the height of trapezoid EFGH is 9cm