Please help me!!!! I'll give the brainliest!!!!!!

Mathematics

2 answers:

larisa [96]3 years ago

6 0

Answer:

Step-by-step explanation:

astra-53 [7]3 years ago

3 0

Answer:

how can i help uh .there is no question at all.

please post question.

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Please answer this, ILL MARK YOU THE BRAINLIEST

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Step-by-step explanation:

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Pls anyone help for a big change in my grade

gregori [183]

Answer:

x=3

Step-by-step explanation:

A vertical line will have the equation in terms of x. Any point you choose on line <em>l </em>will have an x-coordinate of 3.

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3 years ago

Solve the equation 2cosA = 3tanA

zavuch27 [327]

$\bf sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\\\\
-----------------------------\\\\

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\\\\\\
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$\bf \\\\\\
0=[2sin(A)-1][sin(A)+2]\implies 
\begin{cases}
0=2sin(A)-1\\
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----------\\
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now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1

now, we have -2 = sin(A), which simply is out of range for a valid sine, so there's no angle with such sine

so, only the first case are the valid angles for A

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