Angle θ lies in the second quadrant, and sin θ = 3/5.

cos θ =

tan θ =

The answer is

sin θ = 3/5

we know that

sin ² θ + cos² θ = 1, so cos² θ=1 - sin ² θ

and then cos θ=sqrt (1 - sin ² θ)

sin θ = 3/5 implies sin ² θ = (3/5) ²=9/25

cos θ=sqrt (1 - 9/25) = cos θ=sqrt (16/25) = 4/5

cos θ=4/5

and

tan θ = sin θ / cos θ = (3/5) / (4/5) = 3/4

finally

sin θ = 3/5

cos θ=4/5

tan θ = 3/4