Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Pratham Jain 6 years, 4 months ago
- 2 answers
Posted by Manauwar Hussain 6 years, 4 months ago
- 2 answers
Posted by Abhay Verma 6 years, 4 months ago
- 1 answers
Gourav ## Back ## Happy ? ? 6 years, 4 months ago
Posted by Vikas Paswan 6 years, 4 months ago
- 1 answers
Posted by Kung Fu ?? 6 years, 4 months ago
- 1 answers
Posted by Namrta Sahijpaul Sharma 6 years, 4 months ago
- 0 answers
Posted by Namrta Sahijpaul Sharma 6 years, 4 months ago
- 1 answers
Shivansh Singh Parihar 6 years, 4 months ago
Posted by Puspanjali Behera 6 years, 4 months ago
- 3 answers
Ashutosh Mishra 6 years, 4 months ago
Posted by Aditya Singh 6 years, 4 months ago
- 1 answers
Posted by Devansh Mahajan 6 years, 4 months ago
- 0 answers
Posted by Shivang Singh 6 years, 4 months ago
- 1 answers
Binay Kumar 6 years, 4 months ago
Posted by ❤ Suhani ❤ 6 years, 4 months ago
- 0 answers
Posted by Premkumar Pandurangan 6 years, 4 months ago
- 0 answers
Posted by Iris Kerketta 6 years, 4 months ago
- 1 answers
Ã.P.W.B.Đ ⚡ 6 years, 4 months ago
Posted by ❤ Suhani ❤ 6 years, 4 months ago
- 1 answers
Mayank Sharma 6 years, 4 months ago
Posted by Siddhi Kadam 6 years, 4 months ago
- 0 answers
Posted by Siraj Kanjaria 6 years, 4 months ago
- 0 answers
Posted by Ajaykarthi Keyan 6 years, 4 months ago
- 0 answers
Posted by Anjitesh Shandilya 6 years, 4 months ago
- 4 answers
Posted by Shailja Awasthi 6 years, 4 months ago
- 1 answers
Posted by Adarsh Kumar 6 years, 4 months ago
- 2 answers
Posted by Arunakshi Arunai88O990 6 years, 4 months ago
- 0 answers
Posted by [email protected] Diwakar 6 years, 4 months ago
- 1 answers
Gaurav Seth 6 years, 4 months ago
Each altitude of the equilateral triangle is equal to
Thus,
To find:
Each of its altitudes = ?
Solution:
Given : ABC is an equilateral triangle of side 2a.
In equilateral triangle, △ADB = △ADC
& ∠ADB = ∠ADC (Both 90 degree as AD ⊥ BC)
Thus, △ ADB ≅ △ ADC (By R. H. S. Congruency)
As per CPCT i.e. they are corresponding parts of congruent triangle,
BD = DC
Using Pythagoras theorem,
Hence,
Thus, the altitudes of the given equilateral triangle is equal to
Posted by Abhishek Gupta 6 years, 4 months ago
- 1 answers
Gaurav Seth 6 years, 4 months ago
Answer:
k = 4
Step-by-step explanation:
Our given equation is :
9 x² - 3 k x + k = 0
Comparing with a x² + b x + c = 0 we get :
a = 9
b = - 3 k
c = k .
Whenever we are told that the equation has equal roots then :
b² = 4 a c
This method can be used effectively to calculate the value of k .
( - 3 k )² = 4 ( 9 ) ( k )
⇒ 9 k² = 36 k
⇒ k² = 36 k / 9
⇒ k² = 4 k
⇒ k = 4
The value of k is 4 .
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Honey ???? 6 years, 4 months ago
1Thank You