Let 𝑐𝑜𝑠𝑥 = (− 1 /2+𝑚 ) and cos 𝑥 lies below the 𝑥 𝑎𝑥𝑖𝑠 . m=8

Let 𝑐𝑜𝑠𝑥 = (− 1 /2+𝑚 ) and cos 𝑥 lies below the 𝑥 𝑎𝑥𝑖𝑠 . m=8

 

1) find sin(2x) , cos(2x) and tan(2x).