Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 , then
sin²x = 1 - cos²x and cos²x = 1 - sin²x
Consider the left side
← expand numerator/denominator using FOIL
=
= 
= 
= 
= cot²A = right side , thus proven
The answer to 19b is 35
i’m sorry i don’t know part A
Answer:
A, C, and E
Step-by-step explanation:
-2, 0, and 5
Answer:
C. 
Step-by-step explanation:
First, find the slope, m, of the line that passes through the two given points.
Slope = 
Next, determine the y-intercept, b.
The y-intercept is where the line intercepts the y-axis. The line intercepts the y-axis at y = 2. Therefore, b = 2.
Now, to get an equation of the line, substitute m = -1, and b = 2 in
.
✅The equation would be:

