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KiRa [710]
3 years ago
12

How do you find an area of a triangle when you just have two sides and an angle?

Mathematics
1 answer:
Olenka [21]3 years ago
5 0
You have to use sin, cos, tan and find the length of the last side and other angles. Then you have to put an imaginary line down the middle and use the sin, cos, tan to find the height and then do 1/2 base times height.
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The question is in the picture.
dangina [55]
<h2><u>Part A:</u></h2>

Let's denote no of seats in first row with r1 , second row with r2.....and so on.

r1=5

Since next row will have 10 additional row each time when we move to next row,

So,

r2=5+10=15

r3=15+10=25

<u>Using the terms r1,r2 and r3 , we can find explicit formula</u>

r1=5=5+0=5+0×10=5+(1-1)×10

r2=15=5+10=5+(2-1)×10

r3=25=5+20=5+(3-1)×10

<u>So for nth row,</u>

rn=5+(n-1)×10

Since 5=r1 and 10=common difference (d)

rn=r1+(n-1)d

Since 'a' is a convention term for 1st term,

<h3><u>⇒</u><u>rn=a+(n-1)d</u></h3>

which is an explicit formula to find no of seats in any given row.

<h2><u>Part B:</u></h2>

Using above explicit formula, we can calculate no of seats in 7th row,

r7=5+(7-1)×10

r7=5+(7-1)×10 =5+6×10

r7=5+(7-1)×10 =5+6×10 =65

which is the no of seats in 7th row.

8 0
3 years ago
Graph triangle cuz with vertices x(-2, -4), y(2, -1), and z(4, -3) on the coordinate grid.
Vera_Pavlovna [14]
This is what I got pls mark me brainlest

4 0
3 years ago
Which ordered pair represents a solution to f(x) = x – 5 if f(−1)?
olchik [2.2K]

Answer:

(-1, -6)

Step-by-step explanation:

f(x) = x - 5

f(x) = -1-5

f(x) = -6

(-1, -6)


4 0
3 years ago
Read 2 more answers
Pls help i will mark brainliest!:) thank you!;D
pashok25 [27]
<h2><em><u>A</u></em><em><u>N</u></em><em><u>S</u></em><em><u>W</u></em><em><u>E</u></em><em><u>R</u></em></h2>

<em><u>H</u></em><em><u>e</u></em><em><u>r</u></em><em><u>e</u></em><em><u> </u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>t</u></em><em><u>w</u></em><em><u>o</u></em><em><u> </u></em><em><u>p</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u>s</u></em><em><u> </u></em><em><u>g</u></em><em><u>i</u></em><em><u>v</u></em><em><u>e</u></em><em><u>n</u></em><em><u> </u></em><em><u>o</u></em><em><u>n</u></em><em><u> </u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>g</u></em><em><u>r</u></em><em><u>a</u></em><em><u>p</u></em><em><u>h</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>a</u></em><em><u>n</u></em><em><u>d</u></em><em><u> </u></em><em><u>B</u></em>

<em><u>T</u></em><em><u>o</u></em><em><u> </u></em><em><u>f</u></em><em><u>i</u></em><em><u>n</u></em><em><u>d</u></em><em><u> </u></em><em><u>:</u></em><em><u> </u></em><em><u> </u></em><em><u>T</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>d</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>n</u></em><em><u>c</u></em><em><u>e</u></em><em><u> </u></em><em><u>i</u></em><em><u>n</u></em><em><u> </u></em><em><u>b</u></em><em><u>e</u></em><em><u>t</u></em><em><u>w</u></em><em><u>e</u></em><em><u>e</u></em><em><u>n</u></em><em><u> </u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>t</u></em><em><u>w</u></em><em><u>o</u></em><em><u> </u></em><em><u>p</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u>s</u></em><em><u> </u></em><em><u>w</u></em><em><u>e</u></em><em><u> </u></em><em><u>k</u></em><em><u>n</u></em><em><u>o</u></em><em><u>w</u></em><em><u> </u></em><em><u>d</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>n</u></em><em><u>c</u></em><em><u>e</u></em><em><u> </u></em><em><u>i</u></em><em><u>n</u></em><em><u> </u></em><em><u>b</u></em><em><u>e</u></em><em><u>t</u></em><em><u>w</u></em><em><u>e</u></em><em><u>e</u></em><em><u>n</u></em><em><u> </u></em><em><u>t</u></em><em><u>w</u></em><em><u>o</u></em><em><u> </u></em><em><u>p</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u> </u></em><em><u>o</u></em><em><u>n</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>g</u></em><em><u>r</u></em><em><u>a</u></em><em><u>p</u></em><em><u>h</u></em><em><u> </u></em>

<em><u>=</u></em><em><u> </u></em>

<em><u>\sqrt{ {(x2 - x1)}^{2} }  +  \sqrt{ {(y2 - y1)}^{2} }</u></em>

<em><u>T</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>P</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>(</u></em><em><u>0</u></em><em><u>,</u></em><em><u>0</u></em><em><u>)</u></em>

<em><u>T</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>p</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u> </u></em><em><u>B</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>(</u></em><em><u>3</u></em><em><u>,</u></em><em><u>6</u></em><em><u>)</u></em>

<em><u>s</u></em><em><u>o</u></em><em><u> </u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>d</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>n</u></em><em><u>c</u></em><em><u>e</u></em><em><u> </u></em><em><u>i</u></em><em><u>n</u></em><em><u> </u></em><em><u>b</u></em><em><u>e</u></em><em><u>t</u></em><em><u>w</u></em><em><u>e</u></em><em><u>e</u></em><em><u>n</u></em><em><u> </u></em><em><u>p</u></em><em><u>o</u></em><em><u>i</u></em><em><u>n</u></em><em><u>t</u></em><em><u>s</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>a</u></em><em><u>n</u></em><em><u>d</u></em><em><u> </u></em><em><u>B</u></em><em><u> </u></em>

<em><u>\sqrt{ {(0 - 0)}^{2} }  +  \sqrt{ {(6 - 3)}^{2} }</u></em>

<em><u>\sqrt{ {3}^{2} }</u></em>

<em><u>3</u></em>

So 3.0 is the distance

Hope it helps

7 0
3 years ago
The major math strands for a sixth grade curriculum are number sense and operations, algebra, geometry and spatial sense, measur
Radda [10]

Answer:

i didn't learn algebra or geometry or spatial sense when i was in sixth grade

Step-by-step explanation:

3 0
3 years ago
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