What are you looking for?
Answer:
Step-by-step explanation:
The trigonometric function secant is the reciprocal of cosine:
For :
(1)
On the other hand, it is known , hence:
(2)
In addition, it is known (3)
Substituting this on (1):
(4)
(5)
(6)
Finally:
There are 5376 squares on all of the chessboards because 84 x 64= 5376
Answer:
No
Step-by-step explanation:
These points would not be a function as one x value shares more than one y value. The -6 shares both 2 and 3 as a y value.
In order to have a function, and x value can only have one y value. However, a y value can correspond to multiple x values and it can still be a function.