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Jason
Subject: Maths
, asked on 7/2/18
A circle with radius R and center O is drawn . 2 tangents PQ and PR are drawn from point P and PO is twice the radius. Prove that PQR is an equilateral triangle
Answer
3
Mansi Jindal
Subject: Maths
, asked on 7/2/18
Q17 is my doubt?! And why is OP perpendicular bisector of AB
Q.17. In figure, AB is a chord of a circle, with centre O, such that AB = 16 cm and radius of circle is 10 cm. Tangents at A and B intersect each other at P. Find the length of PA.
Answer
1
Ayan
Subject: Maths
, asked on 6/2/18
Solve this:
Q. 1. In the given figure,
△
A
B
C
~
∆
A
D
E
.
if AE=2 cm, EC=3cm and DE = 1.6 cm, then find BC.
[Ans. BC=4 ( Using Thales' theorem)]
Q. 2. Mean of four observations is 12. If first, second, third and fourth observations are decreased by 1,2,3 and 4 respectively, then find the new means. [Ans. New Mean =9.5]
Q. 3. A letter is chosen at random from the letter of the word "PROBABILITY". Find the probability that is is not a vowel. [Ans. 7/11]
Answer
3
Mahek Harwani
Subject: Maths
, asked on 4/2/18
solve Q.18 no links
Q.18. In given figure XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and X'Y' at B. Prove that
∠
A
O
B
=
90
°
.
Answer
1
Saksham
Subject: Maths
, asked on 4/2/18
Solve this:
Answer
3
Abhishek
Subject: Maths
, asked on 3/2/18
In the figure, if ∠APO = 40°, find ∠AOB
Answer
2
Gouri Lahoti
Subject: Maths
, asked on 2/2/18
If PAB is a secant and PT is a tangent then prove that angle 1 is equal to angle to an angle 3 is equal to angle 4.
Answer
2
Shweta Verma
Subject: Maths
, asked on 2/2/18
16
.
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=
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n
d
∠
A
P
B
=
60
°
.
.
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d
A
B
.
Answer
1
Sameer Ali
Subject: Maths
, asked on 2/2/18
29. The radii of two concentric circles are 13 cm and 8 cm. AB is a diameter of the bigger circle and BD is tangent to the smaller circle touching it at D and intersecting the larger circle at P, on producing. Find the length of AP.
Answer
1
Champ Jee
Subject: Maths
, asked on 1/2/18
Is the answer 130 degree.
I just want to ensure. See the question in the pic.
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v
)
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a
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r
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=
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°
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s
u
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o
f
∠
C
A
D
.
Answer
3
Vikash Kumar
Subject: Maths
, asked on 1/2/18
Solve this:
Q.2. In figure, if PQ is a tangent, then find the value of
∠
P
O
Q
+
∠
Q
P
O
.
Answer
2
Shrish Vaidya
Subject: Maths
, asked on 1/2/18
25
.
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e
v
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e
a
r
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27
.
T
w
o
tan
g
e
n
t
s
A
B
a
n
d
A
C
a
r
e
d
r
a
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e
O
s
o
t
h
a
t
∠
B
A
C
=
120
°
.
P
r
o
v
e
t
h
a
t
O
A
=
2
A
B
.
Answer
6
Shishira
Subject: Maths
, asked on 31/1/18
Q. Find the area of shaded region . If BC = 4 cm and AB = 5 cm.
Answer
2
Son Ser
Subject: Maths
, asked on 30/1/18
Plzz fast i have exams 2moro. Dont provide any link plzzzzz
Q. AB is the tangent.
∠
A
C
B
=
2
°
. Find
∠
C
A
B
when AC = AO = 1 cm.
Answer
3
Son Ser
Subject: Maths
, asked on 30/1/18
Plzz fast i have exams 2moro. Dont provide any link plzzzzz
∠
A
C
B
=
20
°
,
A
D
=
A
C
=
10
,
A
B
i
s
t
h
e
tan
g
e
n
t
.
F
i
n
d
∠
B
A
C
Answer
1
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What are you looking for?
Q.17. In figure, AB is a chord of a circle, with centre O, such that AB = 16 cm and radius of circle is 10 cm. Tangents at A and B intersect each other at P. Find the length of PA.
Q. 1. In the given figure, if AE=2 cm, EC=3cm and DE = 1.6 cm, then find BC.
[Ans. BC=4 ( Using Thales' theorem)]
Q. 2. Mean of four observations is 12. If first, second, third and fourth observations are decreased by 1,2,3 and 4 respectively, then find the new means. [Ans. New Mean =9.5]
Q. 3. A letter is chosen at random from the letter of the word "PROBABILITY". Find the probability that is is not a vowel. [Ans. 7/11]
Q.18. In given figure XY and X'Y' are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and X'Y' at B. Prove that .
I just want to ensure. See the question in the pic.
Q.2. In figure, if PQ is a tangent, then find the value of .
Q. AB is the tangent. . Find when AC = AO = 1 cm.