Which statement is true for all real values of 0? [6.01] A. sin20 - cos20 = 1 O B. cos20 = 1 + sin20 V C. sec20 + tan20 = 1 O D. cot20 = csc20 -1tanX + 1 The expression 1 - tanX can be rewritten as which of the following? [6.02] A. tan (x - (57 /4)) O B. tan (x - (3Tt/4)) C. tan (x + (7Tu/4)) D. tan (x - (TU/4))\f8 Given sin(0) = 17 and 2 what is the exact solution of sin(20)? [6.03] O A. -128/169 O B. 4(V189)/75 V C. 240/289 O D. -V189/169What are all the solutions to the equation 2cos2 0 - 1 3 = 2 ? [6.03] A. X= (T/6) + 2min, x = (11n/6)+ 2Tin O B. x = (5nt/12) + nn, x = (7nt/12)+ Tin C. x= (T/8) + run, x = (7Tt/8)+ run D. X = (5T /6) + 2run, x = (7Tt/6)+ 2rtnAt which values in the interval [0, 2nt) will the functions f (x) = cos(2x) - 5 and g(x) = sin(2x) - 5 intersect? [6.06] A. X = 0, 1/8, TU/2, 97/8 O B. x = It/8, 57t/8, 9nt/8, 13nt/8 C. x = 1/10, It/2, 97 /10, 137t/10, 17/10 D. x = 0, TL/2, 1/10, 13Tu/10, 17/10The sound wave of two music notes can be represented by the function y = -2cos2x and v 2 cost. where x represents the time since the note is played. At what times will the frequencies of the sound waves be the same in the interval [0, 360)? [6.06] A. X : 0, 180, 220, 300 B. X : 0, 60, 120, 180 C. x = 60, 100, 140, 180 D. x = 60, 120, 240, 300