busra09
08.07.2021 •
Mathematics
What is the product?
(ay3)2 + 3y - 5)
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Ответ:
Ответ:
cos C=(a²+b²-c²)/2ab
cos Z = (yz² + xz² - xy² )/2*yz*xz
cos Z = (20² + 25 - 13²)/2*20*25
cos Z = 856 / 1000
Z=31.13°
The answer is angle 31.13°.