PLEASE I NEED HELP WITH THIS WORKSHEET FROM PRE CALC, DUE TOMORROW
1 answer:
Answer:
13) 790°
14) 945°
15) -890°
16) -360°
17) 890°
18) -220°
Step-by-step explanation:
Please see the attached pictures.
Trace the lines and for every complete circle (4 quadrants), which I represented with a single colour, add 360°.
If it's just two quadrants, that's 180°.
One quadrant is 90°.
Some properties that might help:
- Adj ∠s on a straight line= 180°
- ∠s at a point= 360°
I've attached the maximum number of pictures so I can't draw on the questions anymore.
For question 18,
From 4th quadrant to 3rd quadrant, it is 180°.
The remaining value would be 90°-50°= 40°
Hence the measure of the angle is 180°+40°= 220°
If the angle moves clockwise from the starting point, it's a negative angle. That's why I added a minus sign for questions 15, 16 and 18.
Feel free to ask if you have any questions :)
You might be interested in
<h2>Hello!</h2>
The answer is:
The missing step is the step shown in the last option:
D.
To find which is the missing step, we need to remember that to cancel a square root, we need to elevate it, so:
Starting from the last step before the missing step, we have:
In order to calculate the value of the variable (x) we need to square both sides of the equation, since squaring a root will cancel the root.
We must remember the following properties:
Now, finding the missing step, we need to find what to do in order to get the expression of the following step.
So, squaring both sides of the equation in order to cancel the square root and isolate the variable, we have:
Hence, we found the the missing step is:
D.
Have a nice day!