Using the 30-60 triangle:

30-60 degree triangle

a. `sin\ 60^"o"=sqrt3/2`

b. `cos\ 60^"o"=1/2`

c. `tan\ 60^"o"=sqrt3/1=sqrt3`

d. `csc\ 30^"o" = 2`


Questions (e) and (f) need the 45-45 triangle:

45-45 degree triangle

e. `cot\ 45^"o" = 1`

f. `sec\ 45^"o"=sqrt2`

Please support IntMath!