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AP and TS EAMCET Engineering Model Paper 15
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© examsnet.com
Question : 6
Total: 160
If an angle α is divided into two parts A & B such that A - B = x and tan A : tan B = k : 1, then the value of sin x is
k
+
1
k
−
1
sin
α
k
k
+
1
sin
α
k
−
1
k
+
1
sin
α
tan
α
Validate
Solution:
sin
A
cos
B
c
o
a
A
sin
B
=
k
1
⇒
sin
(
A
+
B
)
sin
(
A
−
B
)
=
k
+
1
k
−
1
⇒
sin
x
=
k
−
1
k
+
1
sin
α
© examsnet.com
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