Posted by **Kheladi Nep** on Thursday, June 10, 2010 at 9:29am.

Triangle ABD in the diagram has a right angle A and sides AD = 4.9cm and AB = 7.0cm. side AB is extended to C so that ABC is a straight line.

a) use pythagoras theorem in triangle ABD to find the length of BD.

b)use trigonometry in triangle ABD to find angle ABD. hence find angle DBC.

c)angle BCD=21* use the sine formula in triangle BCD to find the length of CD

d)use the cosine formula in triangle BCD to find the length of BC

## Answer This Question

## Related Questions

- Engineering - Triangle ABD in the diagram has a right angle A and sides AD = 4....
- Math(Geometry) - In the diagram below(no diagram but details will be provided), ...
- Geometry - Please answer at least one . PLEASE 1. Triangle XYZ has a right ...
- math - I have 14 questions and I was wondering if someone could check my answers...
- Geomentry - What is the converse of the theorem statement: If a line parallel to...
- pls help w/t math ? - in a right triangle ABC, if ab is 14 and bc is 12 wut is ...
- Math - In a triangle ABC, with angles A, B, and C and sides AB, BC, and AC, ...
- geometry - obtuse triangle ABC with obtuse angle B. Point D on side AC such that...
- Math - From the vertex A of a right angled triangle ABC, (A being the right ...
- geomerty - The following triangles, Ä ABC and Ä DEF, are congruent. abc 67....

More Related Questions