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cluponka [151]
3 years ago
6

TanA= 2xy/(x^2+y^2),find sinA​

Mathematics
1 answer:
valina [46]3 years ago
7 0

Step-by-step explanation:

TanA = SinA/CosA

                                 tanA = 2xy / (x² + y²),

                                 Sin A = CosA * 2xy / (x² + y²)

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3 years ago
Need help will give thanks and brainliest
Y_Kistochka [10]

Answer:

y=\frac{2}{3} x-1

Step-by-step explanation:

Linear equations are typically organized in slope-intercept form:

y=mx+b where m is the slope and b is the y-intercept (the value of y when the line intercepts the y-axis)

<u>1) Find the slope of the line (m)</u>

The equation for slope: \frac{y_2-y_1}{x_2-x_1} when the given points are (x_1,y_1) and (x_2,y_2)

Plug in the given points (3,1) and (6,3)

\frac{y_2-y_1}{x_2-x_1}

=\frac{3-1}{6-3}\\=\frac{2}{3}

Now, plugging this back into y=mx+b, our equation looks like this:

y=\frac{2}{3} x+b

<u />

<u>2) Find the y-intercept of the line</u>

To find the y-intercept, we take the equation that we have so far and plug in any given point to solve for b. For example, we can use the point (3,1):

1=\frac{2}{3}*3+b\\1=2+b

Subtract both sides by 2 to isolate b

1-2=2+b-2\\-1=b

<u>3) Plug m and b into y=mx+b</u>

y=\frac{2}{3} x-1

I hope this helps!

8 0
3 years ago
The undefined terms line and plane are needed to precisely define which mathematical term?
vladimir1956 [14]

One <em><u>possible answer</u></em> is:

Parallel lines

Explanation:

Parallel lines are two or more lines in a plane that are the same distance apart and will never intersect.  This definition uses two undefined terms, line and plane.

6 0
4 years ago
If 8 pounds of bananas cost $3.68, what is the cost per<br> pound?
12345 [234]

Answer:0.46

Step-by-step explanation

3.68 divided by 8 = 0.46

3 0
3 years ago
Read 2 more answers
A line that is perpendicular to y=-3x-10 passing through the point (6,8)
Thepotemich [5.8K]

Answer: y = -1/3x + 10

Step-by-step explanation:

To make it perpendicular change the reciprocals

So instead of 3x it'll be -1/3x and so it passes through the given points

plug the points

8 = -1/3(6) + b

8 = -2 + b

add 2 to both sides

10 = b

so the equation of a line thats perpendicular to y=-3x-10 and passes through

points (6,8) is

y = -1/3x + 10

5 0
3 years ago
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