Question

Вычислите tg ( arccos 3/5 ).

Answer 1

tg(arccos3/5)=sin(arccos3/5)/cos(arccos3/5)=(4/5)/(3/5)=4/3

 

cos(arccos3/5)=3/5

cos^2(arccos3/5)=9/25

sin^2(arccos3/5)=16/25

sin(arccos3/5)=4/5