Question : Two circles touch each other externally at P. AB is a direct common tangent to the two circles, A and B are points of contact, and $\angle$PAB = 35°, then $\angle$ABP is:
Option 1: 35°
Option 2: 55°
Option 3: 65°
Option 4: 75°
Latest: SSC CGL 2024 final Result Out | SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL Tier 1 Scorecard 2024 Released | SSC CGL complete guide
Suggested: Month-wise Current Affairs | Upcoming Government Exams
Correct Answer: 55°
Solution :
Given that the two circles touch each other externally at P and AB is a direct common tangent to the two circles, A and B are points of contact and $\angle$PAB = 35°. When a direct common tangent is drawn to both circles and two circles come into external contact at a certain point, the angle subtended by the direct common tangent at that point is 90°. The angle between a tangent and the radius at the point of contact is 90°. Such that, $\angle$APB = 90°. In $\triangle$PAB, $\angle$ABP = 90° – $\angle$PAB ⇒ $\angle$ABP = 90° – 35° ⇒ $\angle$ABP = 55° Hence, the correct answer is 55°.
Candidates can download this ebook to know all about SSC CGL.
Admit Card | Eligibility | Application | Selection Process | Preparation Tips | Result | Answer Key
Question : Two circles touch each other externally at P. AB is a direct common tangent to the two circles, A and B are points of contact and $\angle$PAB = 40°. The measure of $\angle$ABP is:
Option 1: 45$^\circ$
Option 2: 55$^\circ$
Option 3: 50$^\circ$
Option 4: 40$^\circ$
Question : In $\triangle$ABC, $\angle$B = 35°, $\angle$C = 65° and the bisector of $\angle$BAC meets BC in D. Then $\angle$ADB is:
Option 1: 40°
Option 2: 75°
Option 3: 90°
Option 4: 105°
Question : If two circles of radii 18 cm and 8 cm touch externally, then the length of a direct common tangent is:
Option 1: 24 cm
Option 2: 14 cm
Option 3: 16 cm
Option 4: 12 cm
Question : ABC is an isosceles triangle such that AB = AC, $\angle$ABC = 55°, and AD is the median to the base BC. Find the measure of $\angle$BAD.
Option 1: 50°
Option 3: 35°
Option 4: 90°
Question : If the angle of a right-angled triangle is 35°, then find the other angles.
Option 1: 90° and 75°
Option 2: 90° and 35°
Option 3: 90° and 55°
Option 4: 90° and 45°
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile