Our basis for this equality is the pythagorean theorems of trigonometry. There are three equations for the pythagorean theorems. These are:
sin²x + cos²x =1
1 + tan²x = sec² x
1 + cot² x = csc² x
These are all derived from circle geometry on the cartesian plane. Now, the useful trigonometric property to be used is the third one. Rearranging this, we come up with
cot²x - csc²x = -1
This coincided with the given equation. Therefore, this is true. This is because it is already established from the pythagorean theorems.
Answer:
are you fking retaxrded?
Step-by-step explanation:
Answer:
0.375 or 3/ -8
Step-by-step explanation:
28 - 8x = 15
- 8x = 15 - 18
- 8x = 3
x = 3 / - 8
x = - o.375 or 3/ -8
-1/8 -2/8 -3/8 because any fraction is ok, they don't have 0 as a denominator.
