tan x = p, maka 2 sin x cos x adalah

tan x = vertikal/horizontal = p/1 =p
maka sisi miring=
[tex] \sqrt{p {}^{2} + 1} [/tex]
sin x = vertikal/ miring = p/√​p​2​​+1​​​
cos x= horizontal/miring = 1/√​p​2​​+1​​​
2 sin x cos x= 2 p/√​p​^2+1​​​ 1/√​p​2​^2+1​​​ = 2p/ p^2+1