Given 
= 
= 
for a 
ABC with usual notation. If 
= 
= 
, then the ordered triad (
) has a value :-
a.
(3, 4, 5)
b.
(19, 7, 25)
c.
(7, 19, 25)
d.
(5, 12, 13)
= = for a ABC with usual notation. If = = , then the ordered triad () has a value :-a.
(3, 4, 5)
b.
(19, 7, 25)
c.
(7, 19, 25)
d.
(5, 12, 13)
Question ID - 57171 | SaraNextGen Top Answer Given = = for a ABC with usual notation. If = = , then the ordered triad () has a value :-
a.
(3, 4, 5)
b.
(19, 7, 25)
c.
(7, 19, 25)
d.
(5, 12, 13)
Given = = for a ABC with usual notation. If = = , then the ordered triad () has a value :-
|
a. |
(3, 4, 5) |
b. |
(19, 7, 25) |
|
c. |
(7, 19, 25) |
d. |
(5, 12, 13) |
1 Answer
127 votes
Answer Key / Explanation : (c) -
b+c = 11
, c+a=12
, a+b =13
(using cosine formula)
cosA = 
, cosB = 
, cosC= 
⇒ 7 : 19 : 25
127 votes
Answer Link
127