Its none
because a triangle makes up 180 degrees hope this helps and im not a dumby
Answer:
Part 4) ![sin(\theta)=\frac{12}{13}](https://tex.z-dn.net/?f=sin%28%5Ctheta%29%3D%5Cfrac%7B12%7D%7B13%7D)
Part 10) The angle of elevation is ![40.36\°](https://tex.z-dn.net/?f=40.36%5C%C2%B0)
Part 11) The angle of depression is ![78.61\°](https://tex.z-dn.net/?f=78.61%5C%C2%B0)
Part 12)
or ![arcsin(0.5)=150\°](https://tex.z-dn.net/?f=arcsin%280.5%29%3D150%5C%C2%B0)
Part 13)
or ![225\°](https://tex.z-dn.net/?f=225%5C%C2%B0)
Step-by-step explanation:
Part 4) we have that
![cos(\theta)=-\frac{5}{13}](https://tex.z-dn.net/?f=cos%28%5Ctheta%29%3D-%5Cfrac%7B5%7D%7B13%7D)
The angle theta lies in Quadrant II
so
The sine of angle theta is positive
Remember that
![sin^{2}(\theta)+ cos^{2}(\theta)=1](https://tex.z-dn.net/?f=sin%5E%7B2%7D%28%5Ctheta%29%2B%20cos%5E%7B2%7D%28%5Ctheta%29%3D1)
substitute the given value
![sin^{2}(\theta)+(-\frac{5}{13})^{2}=1](https://tex.z-dn.net/?f=sin%5E%7B2%7D%28%5Ctheta%29%2B%28-%5Cfrac%7B5%7D%7B13%7D%29%5E%7B2%7D%3D1)
![sin^{2}(\theta)+(\frac{25}{169})=1](https://tex.z-dn.net/?f=sin%5E%7B2%7D%28%5Ctheta%29%2B%28%5Cfrac%7B25%7D%7B169%7D%29%3D1)
![sin^{2}(\theta)=(\frac{144}{169})](https://tex.z-dn.net/?f=sin%5E%7B2%7D%28%5Ctheta%29%3D%28%5Cfrac%7B144%7D%7B169%7D%29)
![sin(\theta)=\frac{12}{13}](https://tex.z-dn.net/?f=sin%28%5Ctheta%29%3D%5Cfrac%7B12%7D%7B13%7D)
Part 10)
Let
----> angle of elevation
we know that
----> opposite side angle theta divided by adjacent side angle theta
![\theta=arctan(\frac{85}{100})=40.36\°](https://tex.z-dn.net/?f=%5Ctheta%3Darctan%28%5Cfrac%7B85%7D%7B100%7D%29%3D40.36%5C%C2%B0)
Part 11)
Let
----> angle of depression
we know that
----> opposite side angle theta divided by hypotenuse
![sin(\theta)=\frac{2,984}{3,044}](https://tex.z-dn.net/?f=sin%28%5Ctheta%29%3D%5Cfrac%7B2%2C984%7D%7B3%2C044%7D)
![\theta=arcsin(\frac{2,984}{3,044})=78.61\°](https://tex.z-dn.net/?f=%5Ctheta%3Darcsin%28%5Cfrac%7B2%2C984%7D%7B3%2C044%7D%29%3D78.61%5C%C2%B0)
Part 12) What is the exact value of arcsin(0.5)?
Remember that
![sin(30\°)=0.5](https://tex.z-dn.net/?f=sin%2830%5C%C2%B0%29%3D0.5)
therefore
-----> has two solutions
----> I Quadrant
or
----> II Quadrant
Part 13) What is the exact value of ![arcsin(-\frac{\sqrt{2}}{2})](https://tex.z-dn.net/?f=arcsin%28-%5Cfrac%7B%5Csqrt%7B2%7D%7D%7B2%7D%29)
The sine is negative
so
The angle lies in Quadrant III or Quadrant IV
Remember that
![sin(45\°)=\frac{\sqrt{2}}{2}](https://tex.z-dn.net/?f=sin%2845%5C%C2%B0%29%3D%5Cfrac%7B%5Csqrt%7B2%7D%7D%7B2%7D)
therefore
----> has two solutions
----> IV Quadrant
or
----> III Quadrant
P = ( 2 / 3 )s;
s = ( 3 / 5 )t ;
p + s + t = 280 ;
Then, p =( 2 / 3 )( 3 / 5 )t ;
p = ( 2 / 5 )t;
We solve the equation : ( 2 / 5 )t + ( 3 / 5 )t + t = 280 ;
( 2 / 5 )t + ( 3 / 5 )t + ( 5 / 5 )t = ( 1400 / 5 )t;
10t = 1400 ;
t = 1400 ÷ 10 ;
t = 140 postcards has Tim;
p = ( 2 / 5 ) × 140 = 56 postcards has Paul;
s = ( 3 / 5 ) × 140 = 84 postcards has Shawn ;
A triangle undergoes a sequence of transformations.
First, the triangle is dilated by a scale factor of 1/3 about the origin. Then the triangle is reflected over the x-axis. Finally, the triangle is translated left 3 units and up 2 units.