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Alchen [17]
3 years ago
9

In triangle A B C, angle C is a right angle and BC = 11. If lower m angle B equals 30 degrees, find AC.

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
7 0

Answer:

AC=11\frac{\sqrt{3}}{3}\ units  or  AC=6.35\ units

Step-by-step explanation:

we know that

In the right triangle ABC

AC and BC are the legs of the triangle

AB is the hypotenuse

see the attached figure to better understand the problem

tan(30\°)=\frac{AC}{BC}

tan(30\°)=\frac{\sqrt{3}}{3}

so

\frac{\sqrt{3}}{3}=\frac{AC}{BC}

AC=\frac{\sqrt{3}}{3}BC

substitute the value of BC

AC=\frac{\sqrt{3}}{3}(11)

AC=11\frac{\sqrt{3}}{3}\ units

AC=6.35\ units

SVEN [57.7K]3 years ago
5 0

Answer:

11sqrt3/3

Step-by-step explanation:

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Step-by-step explanation:

7 0
2 years ago
a father is now 38 years older than his son. Ten years ago he was twice as old as his son. let x represent the age of the son no
Helga [31]

The present age of father is 86 years old and present age of son is 48 years old

<em><u>Solution:</u></em>

Given that, a father is now 38 years older than his son

Ten years ago he was twice as old as his son

Let "x" be the age of son now

Therefore, from given,

Father age now = 38 + age of son now

Father age now = 38 + x

<em><u>Ten years ago he was twice as old as his son</u></em>

Age of son ten years ago = age of son now - 10

Age of son ten years ago = x - 10

Age of father ten years ago = 38 + x - 10

Then we get,

Age of father ten years ago = twice the age of son ten years ago

38 + x - 10 = 2(x - 10)

28 + x = 2x - 20

2x - x = 28 + 20

x = 48

Thus son age now is 48 years old

Father age now = x + 38 = 48 + 38 = 86

Thus present age of father is 86 years old and present age of son is 48 years old

7 0
4 years ago
What is 7=5x+8 in y=me+b form
tatiyna
I have no idea, do you mean y=mx+n cause if so it's already in that form instead that fact that the 7 is supposed to be a y
5 0
3 years ago
Which definition best describes vertical angles?
Artemon [7]
The correct answer is d
7 0
3 years ago
Tell whether the ordered pair is a solution of the equation<br> y=5x; (15,-3)
n200080 [17]

Answer:

This ordered pair is NOT a solution of the equation.

Step-by-step explanation:

First, it is important to note that ordered pairs consist of (x, y) so in this case

x = 15 and y = -3.  And that any variable directly next to a number calls for multiplication.  So, plugging in the variables the equation would look like

"-3 = 5 x 15"  

To see if 5 x 15 = -3 we will multiply them.  5 x 15 actually equals 75 not -3.  So we know this ordered pair is NOT the solution for the problem.  

3 0
3 years ago
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