Find angle y?
2 Answers
Mar 6, 2018
35.3 degrees
Explanation:
using the cosine rule:
where:
a = 5.9cm
b = 7cm
c = 10cm
A = angle Y
You can rearrange the formula to make A the subject:
You can then very easily substitute the values in to get
35.34902418
Although I would round this to 3 significant figures to get
35.3
Mar 6, 2018
Apply cos rule. 35.34
Explanation:
Plug in values
=35.34