Question

1. The value(s) of x when sin(x) = -1 are x = -90° and 270°?

True

False

2. The y-value for y = cos(x) when x = -90° is 0.

True

False

3. What is the y-value for y = tan(x) when x = -45°?

1/2
1
-1

4. One of the x-value(s) for tan(x) = 0 is 90°.

True

False

Answer 1

Answer:

1. True

2. True

3. y = -1

4. False

Step-by-step explanation:

1 -------------------------

sin(-90) = -1

sin(270) = -1

True

2 --------------------------

y = cos(-90)

y = 0

True

3 -------------------------

y = tan(-45)

y = -1

-1

4 ---------------------------

tan(90) cannot be calculated

False