CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Given : let ABC is a triangle . Angle A = 1 angle B = 2 angle C=3 To prove : Angle 1 + anlge 2 + angle 3 = 180 Construction : draw a line EF through point A , anlge EAB = 4 , angle FAC = 5 Proof : angle 4 + angle 1 + angle 5 = 180 ( linear pair) ........1 Angle 4 = angle 3 (alternate angle) Similarly, angle 5 = angle 2 From equation ..........1 Angle 4 + angle 1+ angle 5 =180 Angle 3+ angle 1+ angle 2 = 180 (since angle 4= angle 3 , and angle 5 = angle 2 ) So, angle 1+ angle 2+ anlge 3= 180 Hence, proved............ Thanks you , I hope you can understand ...........

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If x=l and y=l then find the value of 5x+3y=a

Posted by Priyanshu Pal 5 years, 9 months ago

CBSE > Class 09 > Mathematics

3 answers

Manmohan Keshri 5 years, 9 months ago

A =8

0Thank You

Fathima Kabeer 5 years, 9 months ago

If x=1 and y=1, 5×1+3×1=8

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Nisha Setia 5 years, 9 months ago

X=1, y=1 . 5x+3y=a. 5×1+3×1=a. 5+3=a. a=8.

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Mr.sharma explains his four childern two boys and two girls about distribution of his pproperty amomg them by a picture of triangle ABC such that DEF are midpoints of sides AB,BC,CA respectively are joined to divide triangle ABC in four triangles as shown figure. If total property is equal to area of ∆ABC and share of each child is equal to area of each of four triangles what does each child has share

Posted by Deepika Mall 5 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Harsh Giri 5 years, 9 months ago

Are you from Deoria.Up

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ANSWER

What is difference between 99.9 and 99.9 bar

Posted by Manisha Jain 5 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Pushkar Goyal 5 years, 9 months ago

99.9 bar = 99.99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

0Thank You

Nisha Setia 5 years, 9 months ago

99.9 means ye repeat nhi ho rha And 99.9bar means jo 9 h vo unlimited time repeat hoga To agar koi number unlimited time repeat ho rha h to uske upar (bar) aa jati h For example: 3 ko divide krna h 10 se to answer aayega 0.3333333333333333- - - - - - - - - - - - - To agar etna bada na likhna ho to normally 3 ke upar bar lgakar bhi likh sakte h. ???

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If a=14-6√5,find the value of √a+1/√a

Posted by Mithali Pattanaik?? 5 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

A triangle having sides a,b and c . if s-a=4cm ,s-b=8cm and s-c=12cm then find the value of a,b and c

Posted by Vijay Kumar 5 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Nisha Setia 5 years, 9 months ago

A=4cm, B=8cm, C=12cm 4+8+12 = 24÷2 S=12 S(s-a) (s-b) (s-c) 12(12-4) (12-8) (12-12) 12(8) (4) (0) Ab enke factor bna lene h 2×3×2 (2×2×2) (2×2) ?. ?. ✌. ✌ Ab enke pair ban jayenge. To sabhi pair me se ek ek nikal lena h or unhe bahar rakhna h or jinka pair nhi bna unhe route (√) me rakhna h 2×2×2√3×2 8√6 answer.????

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Four rational numbers between 3and 4

Posted by Shahid Shaik 5 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

J.G Series 5 years, 9 months ago

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Nisha Setia 5 years, 9 months ago

Apne ko 4 rational numbers find krne h To 4+1=5 3 and 4 ko 5 se multiply kr denge 3×5=15 4×5=20 Ab ye jo (15,20) do numbers nikle h enhe nhi likhna enke beech wale 4 numbers likhne h 16,17,18,19????

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ANSWER

Maths previous paper solutions

Posted by Kushal Kim 5 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

In the figure below, if AB=AC,then find the value of x

Posted by Bora Deepika 5 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Pushkar Goyal 5 years, 9 months ago

Figure kaha hai

0Thank You

Rupesh Chauhan 5 years, 9 months ago

Write full question

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ANSWER

The length of altitude of a equilateral triangle is given A) √3 B)√3/4(side)^2 C)√3/2xside D)none of these

Posted by Archna Dwivedi 5 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Naidu Rangumudri 5 years, 9 months ago

ABCD

1Thank You

Rupesh Chauhan 5 years, 9 months ago

1Thank You

ANSWER

The length of altitude of an equilateral triangle is given a)√3 b)√3/4(side)^2

Posted by Archna Dwivedi 5 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

The value of 'x'in 3+2x=(64)1/2+(27)1/3

Posted by Hi Hi 5 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Mudit Maheshwari 5 years, 9 months ago

X =4

1Thank You

ANSWER

The angle between 2 altitude od a parallelogram through the vertices of an obtuse angle of parallelogram

Posted by Mumtaz Shiekh 5 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

In ∆ abc , e is the midpoint of median AD.prove that ∆ bed =4∆ABC

Posted by Pavitra Jain 5 years, 9 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Hur be sale

Posted by Sulabh Jaiswal 5 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Pushkar Goyal 5 years, 9 months ago

****

0Thank You

Fathima Kabeer 5 years, 9 months ago

Dont use these words

1Thank You

ANSWER

Difference between rational & irrational number and give examples ?

Posted by Naina Choudhary. 4 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 4 years, 6 months ago

S.No	Rational Numbers	Irrational Numbers
1	Numbers that can be expressed as a ratio of two number (p/q form) are termed as a rational number.	Numbers that cannot be expressed as a ratio of two numbers are termed as an irrational number.
2	Rational Number includes numbers, which are finite or are recurring in nature.	These consist of numbers, which are non-terminating and non-repeating in nature.
3	Rational Numbers includes perfect squares such as 4, 9, 16, 25, and so on	Irrational Numbers includes surds such as √2, √3, √5, √7 and so on.
4	Both the numerator and denominator are whole numbers, in which the denominator is not equal to zero.	Irrational numbers cannot be written in fractional form.
5	Example: 3/2 = 1.5, 3.6767	Example: √5, √11

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