Letter D. because any opposite number of a negative has to be a positive!
Answer:
b
Step-by-step explanation:
C- is either a or c
Explanation -
Answer:
b. -36/77
Step-by-step explanation:
As 0 < x < /2 => tan x > 0
As 0< y < /2 => tan y > 0
We have the formula:
As tan x = 1/(cotx) =>
As tan x > 0 => tan x = 8/15
As tan y > 0 => tan y = 4/3
As tan (x-y)=
He can drive about 680 miles in 10 hours.