We know, tan x = 1 / cot x
So,tan x = 1/ 0.78
tan x = 1.28
In short,Your Answer would be 1.28
Hope this helps!
okay so you have 1/4 and 5 1/2
make 5 1/2 a improper fraction
so you now have 1/4 and 11/2
now do 

I hope this helps you
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