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

- Trig - The lengths of segments PQ and PR are 8 inches and 5 inches, respectively...
- Math - The perimeter of a triangle Abc is 28 inches . Side Ab is 6 inches long ...
- Trig - Its a 30-60-90 triangle there's a line in the center that= 10 a. What is ...
- 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 ...
- 9th grade - given that a(-1,8) ,b(2,4) and if the line y=4 is the axis of ...
- Math - Right triangle ABC is similar to triangle XYZ. If the length of side AB ...
- geometry - In triangle ABC, if line BC is one inch longer than line AB, line AC ...
- Trig - a. What is the length of the hypotenuse of triangle ABC? b. What is the ...