1.

If a sin2 x+b cos2 x=c, b sin2 y+a cos2 y=d, and a tan x=b tan y, then a2b2 is equal to

Answer»

If a sin2 x+b cos2 x=c, b sin2 y+a cos2 y=d, and a tan x=b tan y, then a2b2 is equal to






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