HomeTrigonometryprove that cot ѳ - tan ѳ=2cos^2ѳ -1/sinѳ - cosѳ prove that cot ѳ - tan ѳ=2cos^2ѳ -1/sinѳ - cosѳ Er Chandra Bhushan May 16, 2021 0 Solution Tags MATH Trigonometry Newer Older