hi, i need to find the missing angle from this shape:

Attachment 20478

im not really sure how to do this so if someone could tell me i will be very grateful!

Printable View

- Jan 17th 2011, 08:17 AMandyboy179find missing angle?
hi, i need to find the missing angle from this shape:

Attachment 20478

im not really sure how to do this so if someone could tell me i will be very grateful! - Jan 17th 2011, 08:27 AMe^(i*pi)
Have you covered the cosine rule?

which may also be written as

Edit: Misread angle as a side - use the law of sines instead (post left here for continuity) - Jan 17th 2011, 08:39 AMandyboy179
would c^2= 6, a^2= 10 and b^2= 96??

- Jan 17th 2011, 08:50 AMskeeter
Law of sines ...

solve for

http://www.mathhelpforum.com/math-he...ngle-shape.jpg - Jan 17th 2011, 08:51 AMe^(i*pi)
- Jan 17th 2011, 10:38 AMandyboy179
would i start it like this?

Attachment 20481 - Jan 17th 2011, 10:43 AMe^(i*pi)
Yes, that's fine.

Me and skeeter used the other way of writing it which is the same as you but flipped over. I have started it off in post 6 - Jan 17th 2011, 10:48 AMandyboy179
would i then do sin?= 6x10/sin96=60.33?