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# Trigonometry Help

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1. 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?
2. You only have to find 2 angles and you get the third angle for free (angles sum to 180 degrees).
3. (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.
4. (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.
5. 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!
6. (Original post by 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!
What do you mean by solve for XYZ?

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