Answer:
e)
f)
g)
h)
i)
j)
Step-by-step explanation:
We can solve this exercise by watching a basic trigonometric table
Here i will list values of sin and cos in the points and
Hence, the sin takes the value 1 on , while it takes the value -1 in its opposite value - \pi/2 (because it is an odd function). If we use the periodicity of the sin, then sin(- \pi/2 + 2 \pi) = -1. Hence
The cos takes value 1 in 0, and it takes the value -1 in
The tangent is the quotient between sin and cos. The tangent is 1 when both cos and sin are equal. We can see that they are equal in , where they take the value
The tangent is -1 where they are the opposite. This happens in where they take the value and respectively.