Answer:Let =tan2
t
=
tan
x
2
, then cos=1−21+2
cos
x
=
1
−
t
2
1
+
t
2
and tan=21−2
tan
x
=
2
t
1
−
t
2
.
Now
1+21−2+21−2(1+)21−21+1−tan2
Step-by-step explanation:
Answer:
x greater than or equal to 3
x greater than or equal to -8/3
Step-by-step explanation:
Answer:
Correct me if Im wrong but I think that it is 3 to the -5th power
Step-by-step explanation:
Answer:
True, this is a function
Step-by-step explanation:
There is a 1 to one correspondence between x and y
Each x goes to one y, so this is a function
