Question

Use the unit circle to find the value of each trigonometric function at the angle indicated

Answer 1

0
-1
-inf
1
0
0

repectively

Answer 2

Answer:

Step-by-step explanation:

We have to find the values of the given trigonometric ratios at the angle indicated. Thus,

(A) The given trigonometric function is:

$cos270^{\circ}$

Since, the function lies in Quadrant III, therefore the value of the function will be negative.

Also, $cos270^{\circ}=-(0)=0$

(B) The given trigonometric function is:

$sin270^{\circ}$

Since, the function lies in Quadrant III, therefore the value of the function will be negative.

Also, $sin270^{\circ}=-1$

(C) The given trigonometric function is:

$tan270^{\circ}$

Since, the function lies in Quadrant III, therefore the value of the function will be negative.

Also, $tan270^{\circ}=undefined$

(D) The given function is:

$cos0^{\circ}$

Since, the function lies in Quadrant I, therefore the value of the function will be positive.

Also,  $cos0^{\circ}=1$

(E) The given function is:

$sin0^{\circ}$

Since, the function lies in Quadrant I, therefore the value of the function will be positive.

Also,  $sin0^{\circ}=0$

(F) The given function is:

$tan0^{\circ}$

Since, the function lies in Quadrant I, therefore the value of the function will be positive.

Also,  $tan0^{\circ}=0$