let cos(x+y) = 4/5 and sin(x-y) = 5/13 then tan2x =
let cos(x+y) = 4/5 and sin(x-y) = 5/13 then tan2x =
Last Activity: 2 Years ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago