Answer:
If P = (x,y) then formulas for each trigonometric functions are:
sin x = y/r
cos x = x/r
tan x = y/x
cot x = x/y
sec x = r/x
cosec x = r/y
where r = √(x²+y²).
First find r:
r = √(13²+84²)=√(169+7056)=√7225=85.
Then just substitute:
sin x = 84/85
cos x = 13/85
tan x = 84/13
cot x = 13/84
sec x = 85/13
cosec x = 85/84
Circumference = πD
30π = πD
D = 30 inches
Answer: 30 inches
3$
Step-by-step explanation:
12$-(12$:4+12$:2)=12$-(3$+6$)=12$-9$=3$ Hope this helped!
7.85 dollars because 3.14 is the price of one pound your buying 2.5 so you times 3.14 by 2.5
