" (ii) "(a+b+c+d):(a+b-c-d)=(a-b+c-d):(a-b-c+d)" 3661,"san1^(@)+(2)/(oo)leqslant s,a,a

If (a + b + c + d) : (a + b - c - d) = (a - b + c - d):(a-b-c+d) , then prove that a : b = c :d .

If (a + b + c + d) (a - b - c + d) = (a + b - c - d) (a - b + c - d) , prove that: a : b = c : d .

If (a + b + c + d) (a - b - c + d) = (a + b - c - d) (a - b + c - d) , then prove that a : b = c : d

If (a+b+2c+3d)(a-b-2c+3d)=(a-b+2c-3d)(a+b-2c-3d) , then 2b c is equal to 3/2 (b) (3a)/(2d) (c) 3a d (d) a^2d^2

If a-b:b-c:c-d=1:2:3 then (a+d):c=

If A =[{:(a, b), (c, d):}] " then " A^(-1) = ____. a) (1)/(ad-bc)[(b,-c),(-d,a)] b) (1)/(ab-cd)[(b,-c),(-d,a)] c) (1)/(ab-cd)[(b,d),(c,a)] d)None of these

If asin^2x+bcos^2x=c,bsin^2y+acos^2y=d and atanx=btany then a^2/b^2=........ (0ltx,yltpi/ 2) .............. A) ((b-c) (d-b))/((a-d) (c-a)) B) ((a-d ) (c-a))/((b-c) (d-b)) C) ((d-a) (c-a))/((b-c)(d-b)) D) ((b-c) (d-b))/((c-a) (a-d))

If (a)/(b)=(c)/(d) then (a+b)/(a-b)=(c+d)/(c-d),ab=cd ,(a^(2)+b^(2))/(a^(2)-b^(2))=(c^(2)+d^(2))/(c^(2)-d^(2)), ad-dc=0

if x=(a-b)/(a+b+c+d)=(b-c)/(a+b+c+d)=(c-d)/(a+b+c+d) =(d-a)/(a+b+c+d) , then find x^(3) .

If (a)/(b) = (c)/(d) , show that : (a + b) : (c + d) = sqrt(a^(2) + b^(2)) : sqrt(c^(2) + d^(2))