1)cosd=^3\2 sind=? tgd=? ctgd=? 2)sind=^2\2 cosd=? tgd=? ctgd=? 3)sind=0,5 cosd=? tgd=?...

Question

1)cosd=^3\2 sind=? tgd=? ctgd=?

2)sind=^2\2 cosd=? tgd=? ctgd=?

3)sind=0,5 cosd=? tgd=? cogd=?

Answer 1

1) cos^2d=3/4  sin^2d=1-cos^2d=1-3/4=1/4 sind=1/2 tgd=sind/cosd=1/sqrt(3) ctgd=sqrt(3)

2) cos^2d=1-1/2=1/2 cosd=sqrt(2)/2 tgd=crgd=1

3) cos^2d=1-1/4=3/4 cosd=sqrt(3)/2 tgd=1/sqrt(3) ctgd=sqrt(3)