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Byju's Answer
Standard XII
Mathematics
Secant of a Curve y =f(x)
If AC, BC a...
Question
If
A
C
,
B
C
and
A
B
are tangents to circle at
Q
,
R
and
P
respectively.
A
P
=
x
,
B
R
=
y
,
C
Q
=
z
find
A
B
.
A
x
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B
y
+
z
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C
y
+
x
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D
y
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Solution
The correct option is
C
y
+
x
In given figure
A
B
=
A
P
+
P
B
A
B
=
x
+
B
R
A
B
=
x
+
y
....
(
∵
B
P
=
B
R
=
y
)
(Tangents drawn from an external point to a circle)
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0
Similar questions
Q.
In given figure if
A
C
,
B
C
and
A
B
are tangents to circle at
Q
,
R
and
P
respectively.
A
P
=
x
,
B
R
=
y
,
C
Q
=
z
A
B
+
A
C
+
B
C
=
p
×
(
x
+
y
+
z
)
. Find
p
.
Q.
If
b
c
y
+
z
=
a
c
z
+
x
=
a
b
x
+
y
. then show that
a
(
b
−
c
)
y
−
z
=
b
(
c
−
a
)
z
−
x
=
c
(
a
−
b
)
x
−
y
Q.
B
C
,
A
B
and
A
C
are tangents to the circle at
D
,
E
and
F
respectively.
∠
E
B
D
=
x
∘
,
∠
F
C
D
=
y
∘
.
Then
∠
E
D
F
equals
Q.
If p, q, r are in AP and x, y, z are in GP, then
x
q
−
r
.
y
r
−
p
.
z
p
−
q
is equal to
Q.
If
a
−
x
p
x
=
a
−
y
q
y
=
a
−
z
r
z
and
p
,
q
,
r
are in AP then
prove that
x
,
y
,
z
are in HP.
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Secant of a Curve y =f(x)
Standard XII Mathematics
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