Let sin t=a​, cos t=b​, and tan t=c. Write the following expression in terms of​ a, b, and c: 2 tan ( - t) - tan t

Answer 1

2 tan ( - t) - tan t = - 3tant = - 3c, because tan is odd function

Answer 2

2 tan (-t) - tan (t)

-2 tan (t) - tan (t)

-3 tan (t)

-3c