19) Solve the following equation over the interval [0, 7 ): cos(x) - sin (x) = Hint: If you use an identity first, the equation becomes easier! AT 3A A A) 4'4'6 * 11x B) 12' 12 C) 0,- 2'6' 6 D) 6'6 E) 6' 6 12'12 F) None