We can do
sec t=1/cos t
tan=(sint)/(cost)
then
4sect(tant-sect)=
4/cost(sint/cost-1/cost)=
4/cost((sint-1)/cost)=
undistribute 4
seperate
integrate seperately
u subsitute
u=cos(t)
du=-sin(t)
use the power rule since
other part
=tan(t) as defined by the integral rule
now we got
=
now we can do
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