wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Two circles touch each other internally at a point P. A chord AB of the bigger circle intersects the other circle in C and D. Then, CPA= _______.


A

5DPB.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

2DPB.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

8DPB.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

DPB.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D

DPB.


Given - Two circles touch each other internally at P. A chord AB of the bigger circle, intersects the smaller circle at C and D, AP, BP, CP and DP are joined.

Construction - Draw a tangent TS at P to the circles given.

TPS is the tangent, PD is the chord.

PAB=BPS ....(i)

(Angles in alternate segment)

Similarly we can prove that

PCD=DPS .....(ii)

Subtracting (i) and (ii), we get

PCDPAB=DPSBPS

But in ΔPAC

Ext. PCD=PAB+CPA

PAB+CPAPAB=DPSBPS

CPA=DPB


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon