Question

if tan@=3/4 and @+ a=90 find cotA

Answer 1

Given tan@=3/4                                        ----------- equation (1)
also given @+ a=90  ; means @=90-a     ------------ equation (2)
using value this value of @ in equation 1 we get
tan(90-a)=3/4
cot a = 3/4                                                  ------------as tan(90-a) = cot a  

Answer 2

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