Trigonometry Help

How do I do this without testing all of them? I know you have to use the cosine rule but it would take a lot of time testing all of them so what other methods could you use?

Reply 1

B_9710

You only have to find 2 angles and you get the third angle for free (angles sum to 180 degrees).

Reply 2

PersonInProgress

Original post by B_9710

You only have to find 2 angles and you get the third angle for free (angles sum to 180 degrees).

Yeah I was just wondering if there was a quicker way but thanks anyway. I guess that's why it is 5 marks.

Reply 3

B_9710

Original post by MainlyMathsHelp

Yeah I was just wondering if there was a quicker way but thanks anyway. I guess that's why it is 5 marks.

Yeah, it's just plugging the numbers in. No tricks or anything that I can see here.

Reply 4

jessback

Hello, friends! Is there anybody competent in Trigonometry?
Here is my assignment:
In triangle XYZ,
XY= 16 cm
YZ= 11 cm
<Z = 90 degrees
Solve for XYZ
Help me, guys! I'm seriously considering using the help of https://assignment.essayshark.com/ service, if there is noone able to help me out!