Mathematics, 11.10.2020 23:01 quigley523

Please help How to calculate $cos (x)=\frac{6}{15}$ ? I'm doing a trig question; trying to find angle XYZ, and I think the formula for the answer is C = $\frac{A}{H}$ , which as stated in the title, I think in this situation is $Cos(x)=\frac{6}{15}$ .

I don't know what I'm doing wrong, or if I've done the whole question wrong, but no scientific calculators will give me an answer because it says Cos is already defined. I know for sure the answer isn't 0.4, which was a guess I made. The entire question is attached below.

Please help How to calculate ?

I'm doing a trig question; try

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