Question #10e88

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Answer 1 · 2017-11-07T16:14:13

Below

Convert cot to #cos/sin#
#(1/sin(x)-(cos(x)/sin(x)))^2#=

#((1-cos(x))/sin(x))^2#

#(((1-cosx)(1-cos(x)))/sin^2(x))#

convert #sin^2(x)#

#(((1-cosx)(1-cos(x)))/(1-cos^2(x)))#

Apply difference of two squares

#(1-cosxcancel(1-cos(x)))/(1+cos(x)cancel(1-cos(x))#