The answer is C: the average reading speed of the science fiction novel.
If x is her reading speed for the historical fiction novel, and her reading speed for the sci-fi novel is just two pages more than that of the historical fiction novel, then the equation to find out how fast she reads the science fiction novel would be x + 2, as you’re adding 2 to the reading speed of the historical fiction book (x)
Answer:
8
Step-by-step explanation:
Answer:
A. 55°
B. 71°
C. 100°
D. 65°
E. 120°
F. 155°
G. 147°
H. 36°
I. 70°
J. 54°
K. 24°
L. 40°
Step-by-step explanation:
A. 180 - (90 + 35) = 55°
B. 180 - (34 + 75) = 71°
C. 180 - (43 + 38) = 100°
D. 180 - 50 = 130 / 2 = 65°
E. 180 - (90 + 30) = 60°
180 - 60 = 120°
F. 180 - (120 + 35) = 25°
180 - 25 = 155°
G. 180 - 145 = 35 + 112 = 148°
H. 180 - (40 + 26) = 144°
180 - 144 = 36°
I. 180 - (60 + 65) = 125°
180 - 125 = 55°
180 - (55 + 50) = 75°
180 - (75 + 35) = 70°
J. 180 - 116 = 64°
180 - (64 + 62) = 54°
K. 180 - (138 +18) = 24°
L. 180 - (80 + 60) = 40°
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.
5
4
Triangles
Triangles
rectangles and triangles
Triangles
