(m2+n2)m+n
(m2+n2+2mn)4mn
2(m2+n2+mn)m+n
(m2+n2+mn)m+n
Correct answer is B
(m+n)2=(m−n)2+x2
m2+2mn+n2=m2−2mn+n2+x2
x2=4mn
x=√4mn=2√mn
1 + tan2θ = sec2θ
= 1cos2θ
cosθ=2√mn(m+n)
1cosθ=(m+n)2√mn
sec2θ=(m+n)24mn
= (m2+n2+2mn)4mn
The interior angles of a quadrilateral are (x + 15)°, (2x - 45)°, ( x - 30)° and (x...
How many terms of the series 3, -6, +12, - 24, + ..... are needed to make a total of 1-28? ...
Find, correct to three significant figures, the value of √41830....
If two smaller sides of a right angled triangle are 4cm and 5cm, find its area ...
What number should be subtracted from the sum of 2 16 and 2712 to give&nbs...