Answer:Let =tan2
t
=
tan
x
2
, then cos=1−21+2
cos
1
−
+
and tan=21−2
.
Now
1+21−2+21−2(1+)21−21+1−tan2
Step-by-step explanation:
Answer:
30
Work backwards:
Check your work:
C
38% = 38/100
= 19/50