Question #0430b

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Answer 1 · 2016-05-13T18:42:43

see below

#sinx/cosx +cosx /(1+sinx)#

#=(sinx(1+sinx)+cosx *cosx)/(cosx(1+sinx))#

#=(sinx+sin^2x+cos^2x)/(cosx(1+sinx))#

#=(1+sinx)/(cosx(1+sinx)#

#=1/cosx#

#=sec x#