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Byju's Answer
Standard XIII
Mathematics
Conditional Identities
If A + B + C ...
Question
If A + B + C =
90
∘
then
c
o
t
A
+
c
o
t
B
+
c
o
t
C
c
o
t
A
c
o
t
B
c
o
t
C
A
1
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B
-1
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C
\N
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D
2
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Solution
The correct option is
A
1
c
o
t
A
+
c
o
t
B
+
c
o
t
C
c
o
t
A
c
o
t
B
c
o
t
C
=
c
o
t
A
c
o
t
B
c
o
t
C
c
o
t
A
c
o
t
B
c
o
t
C
=
1
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1
Similar questions
Q.
If A + B + C =
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∘
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o
t
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t
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