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SimplyGenesis762
31.08.2019 •
Mathematics
Is 3 sin(alpha)+4 cos(beta)=8 possible
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Ответ:
No, it's not possible
Step-by-step explanation:
We know that for various values of x ,![-1\leq \sin x\leq 1](/tpl/images/0215/2385/d4a80.png)
and![-1\leq \cos x \leq 1](/tpl/images/0215/2385/4954b.png)
For values of
, ![-1\leq \sin \alpha\leq 1](/tpl/images/0215/2385/0f996.png)
On multiplying all sides by 3, we get
For values of
, ![-1\leq\cos \beta\leq 1](/tpl/images/0215/2385/46274.png)
On multiplying all sides by 4, we get
On adding all sides of
, we get
Therefore, maximum value of
is 7.
So, it's not possible that![3\sin \alpha+ 4\cos \beta=8](/tpl/images/0215/2385/d8d2d.png)
Ответ:
The purpose of a letter to an editor is to persuade.