With the usual notation, in 
if 
A+
B=120°, a=
and b=
Then the ratio 
A : 
B is,
(a)
7:1
(b)
5:3
(c)
9:7
(d)
3:1
if A+B=120°, a= and b= Then the ratio A : B is,(a)
7:1
(b)
5:3
(c)
9:7
(d)
3:1
Question ID - 56934 | SaraNextGen Top Answer With the usual notation, in if A+B=120°, a= and b= Then the ratio A : B is,
(a)
7:1
(b)
5:3
(c)
9:7
(d)
3:1
With the usual notation, in if A+B=120°, a= and b= Then the ratio A : B is,
|
(a) |
7:1 |
(b) |
5:3 |
|
(c) |
9:7 |
(d) |
3:1 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
A+B=1200
tan
=
cot30° =
45° ⇒A−B=90°
A+B=120°
2A=21
A=105°
B=15°
Option(a)
127 votes
Answer Link
127