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OzzyDaGod
25.12.2019 •
Mathematics
What is the value of 1/2 x3 + 3.4y when x = 2 and y = 5
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Ответ:
Ответ:
Step-by-step explanation:
1-2cos²c.
> (cos²c+sin²c)-2cos²c. (cos²c+sin²c=1)
> cos²c+sin²c-2cos²c
> sin²c-cos²c.
is your correct answer.
hope this helps you.