Posted by Alisha on Thursday, December 8, 2011 at 3:02pm.
In an oblique triangle ABC, A=30 degree, and the perpendicular from C to AB is 12 inches long. Find the length of AB.

Math Trig  Damon, Thursday, December 8, 2011 at 4:35pm
tan 30 = 12/AB

Math Trig  eh?  Steve, Thursday, December 8, 2011 at 4:56pm
Actually, you don't say that B is at the foot of the perpendicular. All we know is that the altitude from C to AB is 12. There is nothing to say how long AB is.
In fact, we are told that ABC is an oblique triangle, indicating that it is fact not a right triangle.
Answer This Question
Related Questions
 Math  Triangle abc is right angled at a .ad is drawn perpendicular to bc .if ab...
 Trig  The lengths of segments PQ and PR are 8 inches and 5 inches, respectively...
 geometry  Constuct a triangle ABC ,given that angleA is 70 degree & angle C is ...
 Math  In a triangle ABC,AB=5cm,BC=12cm,angle ABC=90Â°calculate 1)the length of ...
 Trig  Its a 306090 triangle there's a line in the center that= 10 a. What is ...
 Math  The perimeter of a triangle Abc is 28 inches . Side Ab is 6 inches long ...
 Math  The sum of the lengths of the sides of triangle ABC is 38in. The length ...
 math  The perimeter of rectangle ABCD is 256 inches. Its length is 3 times as ...
 math  The perimeter of rectangle ABCD is 256 inches. It's length is 3 times as ...
 Geometry  Please check my answers 1. A triangle has side lengths of 34 in, 20 ...
More Related Questions