Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 9 Answered

In an isoceles triangle  ABC, AB=AC and D is a point BC produced. Prove that  AD^2=AC^2 + BD * CD
Asked by bsap6777 | 28 Aug, 2018, 09:50: PM
answered-by-expert Expert Answer
 
begin mathsize 16px style increment ACB space is space isosceles space triangle. AO perpendicular BC space and space BO equals CO In space increment AOD comma AO squared plus OD squared equals AD squared........ left parenthesis straight i right parenthesis In space increment AOB comma AO squared plus OB squared equals AB squared........ left parenthesis ii right parenthesis Subtract space left parenthesis ii right parenthesis space from space left parenthesis straight i right parenthesis AD squared minus AB squared equals OD squared minus BO squared AD squared minus AB squared equals left parenthesis OD plus BO right parenthesis left parenthesis OD minus BO right parenthesis AD squared minus AB squared equals BD left parenthesis OD minus OC right parenthesis AD squared minus AB squared equals BD cross times CD AD squared equals equals AB squared plus BD cross times CD end style
Answered by Sneha shidid | 29 Aug, 2018, 10:04: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 9 - Maths
Pythagoras Theorem  How to solve the problem in the given picture?  
question image
Asked by mak121007abk | 25 Feb, 2023, 07:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
In triangle ABC, ∠B equals to 90° and D is midpoint of BC. Prove that AC 2 =AD 2 + 3 CD 2
question image
Asked by aryan2mumbai | 01 Sep, 2020, 08:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
in tringle ABC, angle B is 90 °and D is the mid point of BC . prove that  1. AC² = AD² + 3CD² 2.BC²= 4(AD² -AB²)    
Asked by kavyaraval1075.9sdatl | 08 Jun, 2020, 07:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
In rhombus ABCD , prove that : AB^2 + BC^2 + CD^2 + AD^2 = AD^2 + BD^2 
Asked by simranmangnani2282.9sdatl | 13 May, 2020, 02:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
ABC is a right angled triangle in which ∠ABC = 90° and ∠ACB = 60°. BC is produced to D such that ∠ADB = 45°. If CD = 30 cm, what are the lengths of AB and BC?
Asked by akifmohd007 | 03 Jan, 2020, 12:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
The sides of a right triangle containing the right angle are (5x) cm and (3x-1) cm. If the area of the triangle is 60 cm^2, calculate the length of the sides of the triangle.
Asked by kadtej83 | 24 Jan, 2019, 05:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
In an isoceles triangle  ABC, AB=AC and D is a point BC produced. Prove that  AD^2=AC^2 + BD * CD
Asked by bsap6777 | 28 Aug, 2018, 09:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
1)A man travels 7 km due north ,then goes 3km due east and the 3 km due south.how far is he from starting point  
Asked by Sunita | 09 Mar, 2018, 02:53: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
1)The length of two sides of a right angled triangle containing the right angle differ by 6cm.If the area is 36cm2 find the perimeter 2) Solve simultaneously 3/x+4y=7 5/x+6y=13  
Asked by Sunita | 09 Mar, 2018, 02:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
25th ques
question image
Asked by lovemaan5500 | 04 Jan, 2018, 07:29: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×