Question: An equivalent expression to cos-xis a) sin (x) b) cos (x) c) -cosx d)- sin (x) A unit circle is called unit circle because: a)

An equivalent expression to cos-xis

a) sin (x)

b) cos (x)

c) -cosx

d)- sin (x)

A unit circle is called "unit" circle because:

a) It is used in the trigonometry unit

b) It is one unit in radius

c) It is one unit in circumference

d) It is one unit in diameter

For which of the following is there no solution for x?

a) cos (x)-2=0

b) cos (x) = 0.75

c) cos (x)- 1=0

d) cos (x) 0.75 = 0

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