Homework Help: math

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

No one has answered this question yet.

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 HELP ME - What is the range of possible values for x? The ...
Math - From the vertex A of a right angled triangle ABC, (A being the right ...
MATH!!! - given isosceles triangle ABC, line AB = BC, and BD is the angle ...
math - It is a proof. Given: line DB bisects line AC line AD is parallel to line...
trigonometry - given triangle ABC with AB=7cm, BC=8cm and AC=9cm calculate 1. ...
math - In a triangle ABC,right angled at B, BD is drawn perpendicular to AC. ...
geometry - Write a paragraph proof for the following given- AD bisects CB and AD...
Geometry- how to write proof - ABC is a right triangle. Angle C is 90 degree. ...

For Further Reading

First Name:
School Subject:
Answer: