Chapter Sections 5.1-5.5

Question 0

When finding arc length, angular speed, and linear speed what should angles or answers be in? degrees or radians?

Answer 0

RADIANS!!

Question 1

What is the equation for arc length?

Answer 1

S(arc length) = r (radius) * thata (angle)

Question 2

What is the linear speed equation?

Answer 2

V (velocity) = r (radius) * omega (w)

Question 3

What is the equation for angular speed?

Answer 3

W (omega) = thata (angle) / t (time)

Question 4

What is the equation to find area of a sector?

Answer 4

A= 1/2 * r^2 * thata (angle)

Question 5

What are the three Pythagorean identities?

Answer 5

Sin^2 thata + cos^s thata = 1

Tan^2 thata + 1 = sec^2 thata

Cot^2 thata + 1 = csc^2 thata

Question 6

What does cos (-x) = ?

What about sec (-x) = ?

Answer 6

Cos (-x) = cos (x)

Sec (-x) = sec (x)

Question 7

What does sin(-x) = ?
What about csc(-x) = ?
Tan(-x) = ?
Cot(-x) = ?

Answer 7

sin(-x) = -sin(x)
csc(-x) = -csc(x)
Tan(-x) = -tan(x)
Cot(-x) = -cot(x)