20,520 + 3.078 = 23,598 so... 513 * 46 = 23,598
Remember if straight line total is 180 degree
Answer:
a = 60 degrees and b = 30 degrees
Step-by-step explanation:
30 degrees (line E) = angle b
angle b = 30 degrees
there is a right angle plus the 30 degrees = 120 degrees.
180 - 120 = 60 degrees which is angle a
A line contains the points (82, −96) and (87, −86) .What is the slope of the line in simplified form?
Here are the points: (82, −96) and (87, −86)
You could let <span><span>x1</span>=82</span> and <span><span>x2</span>=87</span>
Answer: see proof below
<u>Step-by-step explanation:</u>
Given: cos 330 = 
Use the Double-Angle Identity: cos 2A = 2 cos² A - 1

Proof LHS → RHS:
LHS cos 165
Double-Angle: cos (2 · 165) = 2 cos² 165 - 1
⇒ cos 330 = 2 cos² 165 - 1
⇒ 2 cos² 165 = cos 330 + 1
Given: 

Divide by 2: 

Square root: 
Scratchwork: 

Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE

LHS = RHS 