Home
Class 11
MATHS
[" 51.If "tan alpha tan beta=sqrt((x-y)/...

[" 51.If "tan alpha tan beta=sqrt((x-y)/(x+y))" ,then "],[[(x-y cos2 alpha)(x-y cos2 beta)," (B) "equals],[" (A) "x^(2)-y^(2)," (D) "sqrt(x^(2)+y^(2))]],[" (C) "sqrt(x^(2)-y^(2)),x^(2)+y^(2)]

Promotional Banner

Similar Questions

Explore conceptually related problems

If tan alpha tan beta=sqrt((x-y)/(x+y)), "prove that" \ (x-ycos2alpha)(x-ycos2beta)=x^2-y^2

If x cos alpha + y sin alpha = x cos beta + y sin beta = 2a then cos alpha cos beta =

If alpha=tan^(-1)((sqrt(3)x)/(2y-x)),beta=tan^(-1)((2x-y)/(sqrt(3y)))" then "alpha-beta=

If cos alpha=(1)/(2)(x+(1)/(x))cos beta=(1)/(2)(y+(1)/(y)) then cos(alpha-beta) is equal to

(x tan alpha+y cot alpha)(x cot alpha+y tan alpha)-4xy cos^(2)2 alpha=

If x cos alpha + y sin alpha = x cos beta + y sin beta "then" (2(1-cos (alpha - beta)))/(cos beta - cos alpha)^(2)=

if tan alpha-tan beta=x and cot beta-cot alpha=y prove that cot(alpha-beta)=(x+y)/(xy)

If cos alpha =1/2(x+1/x),cos beta=1/2(y+1/y) then evaluate cos(alpha-beta)

If 2cos alpha = x + (1) / (x), 2cos beta = y + (1) / (y) then (x ^ (10)) / (y ^ (12)) - (y ^ (12)) / ( x ^ (10)) =