Question

determine o valor das seguintes expressoes :
A) y= cossec 11$<var>y= cossec \frac{11}{6}\pi + sec \frac{4\pi}{3} </var>$/6 + sec 4pi/3

Answer 1

A)  y= cossec 11°= 1/(sen 11°) = 1/(0,190808)=5,2408

 

B) /6 + sec 4pi/3 = 1/(sen 330°) + 6/(cos 240°)+1/(cos 240°) = -2+6/(-0,5)+1/(-0,5) = -16