Question: show work 11. cos x tan x csc x = sin x 12. sec x - tan x = tan x sin x 13. (sec2
show work

11. cos x tan x csc x = sin x 12. sec x - tan x = tan x sin x 13. (sec2 x + csc2 x) - (tan? x + cot x) = 2 14. sin x = (1 - cos 2a ) 15. 2 sin 7x cos 7x = sin(14x
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