**Akki chauhan**

Highest common factor.

*-Answered by Akki chauhan* On 13 September 2019:09:38:11 AM

**Question 1.** **Asked on :**07 September 2019:08:51:52 AM

What is full form of HCF

*-Added by Sohail alam* **Mathematics** » **Maths**

**Answer:**

Highest common factor.

*-Answered by Akki chauhan* On 13 September 2019:09:38:11 AM

**Question 2.** **Asked on :**02 September 2019:03:04:03 PM

Q what is the area of square when side is 90cm?

*-Added by Shruti Srivastva * **Mathematics** » **Maths**

**Answer:**

8100 cm sq.

*-Answered by Shruti Srivastva * On 02 September 2019:03:06:18 PM

**Question 3.** **Asked on :**30 August 2019:03:52:44 PM

write the formula of C.I.?

*-Added by Suman Kumari* **Mathematics** » **Maths**

**Answer:**

CI formula

*-Answered by Nishant Verma* On 30 August 2019:03:54:16 PM

**Question 4.** **Asked on :**25 August 2019:03:25:31 PM

Find the next number in the sequence 6,24,60,120.......

*-Added by Akki chauhan* **Mathematics** » **Maths**

**Answer:**

336.

*-Answered by Akki chauhan* On 28 August 2019:09:14:42 AM

**Question 5.** **Asked on :**25 August 2019:03:23:16 PM

Find the next number in the sequence 0,2,24,252......

Please give right answer other wise dont touch this question.

*-Added by Akki chauhan* **Mathematics** » **Maths**

**Answer:**

0,2,24,252 Adding 1,2,3,4 n 5 respectively, 0+1=1 2+2=4 24+3=27 252+4=256 We get, 1,4,27,256 Now, 1=1^1 4=2^2 27=3^3 256=4^4 So, next no. = 5^5 - 5= 3120 :).

*-Answered by Shivang Gupta* On 25 August 2019:03:38:16 PM

**Question 6.** **Asked on :**13 May 2019:10:29:43 AM

*-Added by ravi varma* **Mathematics** » **Maths**

**Answer:**

The rational numbers between 7 and 9 are 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 90.

*-Answered by Himanshi Verma* On 14 May 2019:11:11:27 AM

**Question 7.** **Asked on :**08 May 2019:10:19:35 AM

*-Added by ravi varma* **Mathematics** » **Maths**

**Answer:**

2x-1=14-x

2x+x=14+1

3x=15

x=15/3

x=5

*-Answered by Jyoti Srivastva * On 07 July 2019:10:05:52 PM

**Answer:**

4z+3=6+2z

4z-2z=6-3

2z=3

z=3/2

*-Answered by Jyoti Srivastva * On 07 July 2019:10:11:51 PM

**Question 9.** **Asked on :**01 March 2019:03:26:35 PM

How to prove Pythagorus theorem .

*-Added by Akki chauhan* **Mathematics** » **Maths**

**Answer:**

ABC is a right angle triangle at B and BD is a perpendicular from B on to AC, the diagonal.

Triangles ABC and BDC are similar, as:

. angle DBC = 90 - angle C = angle A

. angle ABC = angle BDC = 90

Ratios of corresponding sides are equal.

AB / BD = BC / DC = AC / BC

So we get BC² = AC * DC --- (1)

Triangle ABC amd ADB are similar, as:

. angle DBA = 90 - (90 - C) = angle C

. angle ABC = 90 = angle ADB

so ratios of corresponding sides are equal

AB / AD = BC / BD = AC / AB

So we get AB² = AD * AC --- (2)

Add (1) and (2) to get:

AB² + BC² = AC * ( AD + DC) = AC * AC = AC²

So the theorem is proved.

*-Answered by Himanshi Verma* On 01 March 2019:03:38:26 PM

**Question 10.** **Asked on :**20 January 2019:10:13:42 AM

cotΦ-1/sinΦ=1

*-Added by Rohit Rajput* **Mathematics** » **Maths**

**Answer:**

Cscϕ/secϕ = (1+cotϕ)/(1+tanϕ)

LHS = (1+cotϕ)/(1+tanϕ)

where cotϕ=cosϕ/sinϕ and tanϕ = sinϕ/cosϕ

= (1+(cosϕ/sinϕ))/(1+(sinϕ/cosϕ))

= ((cosϕ+sinϕ)/sinϕ)/((cosϕ+sinϕ)/cosϕ)

= cosϕ/sinϕ

wkt cosϕ=1/secϕ

and sinϕ=1/cosecϕ

= cscϕ/secϕ

LHS = RHS

Hence Proved

*-Answered by Master Purushottam* On 24 August 2019:12:17:05 AM

**Question 11.** **Asked on :**18 January 2019:05:21:24 PM

Write the formula of cylinder open from the top ?

*-Added by khushi chauhan* **Mathematics** » **Maths**

**Answer:**

Total surface area= 2πr(r+h) -πr^{2}

curved surface area = 2πrh+πr^{2}

*-Answered by Master Purushottam* On 24 August 2019:12:15:48 AM

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