Question

676 X 4

Answer 1

the cosine function is always between -1 and 1

Answer 2

remember your unit circle, it goes out to +1 , -1

Answer 3

5/4 is larger than 1

Answer 4

try and put cos^-1(x) into your calculator, it will say error or Domain error or something like that

Answer 5

so false

Answer 6

For any point on the circle, the x,y coordinate is the cos(theta) and sin(theta) respectively

Answer 7

You see the largest value that the cos(o) can be is +1

Answer 8

ohh so it's true?

Answer 9

5/4 is greater than 1, the cos function is always between -1 and +1, so the cos(o)=5/4 is FALSE

Answer 10

ohh ok I got confused for a min