Asked by Dominic
the lengths of the sides of a triangle are 10,17 and 21 cm. how long is the altitude of the triangle to the longest side?
Answers
Answered by
Reiny
sketch your triangle, I called BC = 21 , AB = 17
By the cosine law we can find angle B
then
sinB = altitude/17
altitude = 17sin B
By the cosine law we can find angle B
then
sinB = altitude/17
altitude = 17sin B