Question

Find the value of Cot - 690​

Answer 1

Answer:

-√3

Step-by-step explanation:

Exact Value cot(690)

cot

(690)

Remove full rotations of 360°until the angle is between

0° and 360°.

cot(

330)

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cotangent is negative in the fourth quadrant.−

cot(30)

The exact value of

cot(30)is

√3

.−√3

The result can be shown in multiple forms.

Exact Form:

−√3

Decimal Form:

−1.7320508

Answer 2

answer

cot 690

cot(720-30)

cot 30

under root of 3

may this helps you