Question

Maths
vijay89's image
vijay89
April 16, 2018, 7:30 a.m.

If cos2A = 1-2sin^2A prove that sin15 = √2-√3/2?

Answer
Maths
's image
April 16, 2018, 7:26 a.m.

If cos2A = 1-2sin^2A prove that sin15 = √2-√3/2?

Answer
Maths
Mahesh Rai's image
Mahesh Rai
April 16, 2018, 12:07 a.m.
In a survey of 200 students of a school ,it was found that 120study mathematics,90study physics and 70study chemistry ,40study maths and physics,30study physics and chemistry,50study chemistry and maths and 20none of these subjects.find the number of student who study all three subjects.
Answer
Irfan Khan's image
Irfan Khan
April 15, 2018, 11:01 p.m.
  • #1. Let f: N → Z be defined by the two-part rule f(n) = n/2, if n is even
    −(n + 1)/2, if n is odd.
    Determine whether f is one-to-one.
Answer
palash bulchandani's image
palash bulchandani
April 15, 2018, 10:11 p.m.
Why we can't calculate circumference and diameter accurately please explain it clearly
Answer
Parvathi Chitti Bomma's image
Parvathi Chitti Bomma
April 15, 2018, 6:26 p.m.

Np4=1680

Answer
Accounts Tax GST
Rana Tanwar's image
Rana Tanwar
April 15, 2018, 5:27 p.m.
Sir Kon kon se expenses pr gst applicable h 
Answer
Maths
's image
April 15, 2018, 5:26 p.m.
a*b=|a-b|
Is * binary on z
Answer
Maths
Sundar Pilavadisamy's image
Sundar Pilavadisamy
April 15, 2018, 3:23 p.m.

Sir,

I want answer to the question. Where only the sides is given and diagonal dimension is not given.

Find the area of the quadrilateral PQRS, if PQ= 12; QR = 6;RS= 7; QR9.

P.Sundar

Answer
Accounts Tax GST
Chandra Prakash Yadav's image
Chandra Prakash Yadav
April 15, 2018, 3:16 p.m.
What is nse
Answer
Maths
Mukul Gupta's image
Mukul Gupta
April 15, 2018, 2:42 p.m.
A field is in shape of a trapezium whose parallel side are 25m and 10 m the non parallel side are 14m and 14m find the area of the field

Answer
Jashan Takkar's image
Jashan Takkar
April 15, 2018, 2:41 p.m.
Find the aps missing term in boxes 
5 ?? 91÷2
Answer
Jashan Takkar's image
Jashan Takkar
April 15, 2018, 2:40 p.m.
In the following aps find the mising term in boxes 
5 ? ? 91÷2

Answer
Maths
Deepak Rawat's image
Deepak Rawat
April 15, 2018, 12:29 p.m.
A tangent to a circle intersects  in it points
Answer
Sujit Yadav's image
Sujit Yadav
April 15, 2018, 12:09 p.m.
How to websit p.f
Answer
Maths
Chaitanya Tt's image
Chaitanya Tt
April 15, 2018, 11:56 a.m.

53^53-33^33 is divisible  by 

Answer