Trigonometry

Question 1

1 rev is equal to _______ in sexagesimal system.

Answer 1

1 rev = 360°

Question 2

1 rev = ________ in gradiance

Answer 2

1 rev = 400^g

Question 3

1 rev is equal to ______ in radians

Answer 3

1 rev = 2 pi

Question 4

1 rev is equal to________ in NATO MILS

Answer 4

I rev = 6 400 mils

Question 5

Enumerate the pythagorean identities

Answer 5

See notes

Question 6

Enumerate sum and difference identities

Answer 6

See notes

Question 7

Enumerate double angle identities

Answer 7

See notes

Question 8

True or false: rad is used in solving wave characteristics

Answer 8

True

Question 9

General functions for wave characteristics:

Answer 9

Y = sin (Bx + C) + D

Y = cos (Bx + C) + D

Question 10

How to get amplitude in wave characteristics?

Answer 10

Amplitude = A

Question 11

How to get period (T) in wave characteristics?

Answer 11

T = 2π/B

Question 12

How to get frequency in wave characteristics?

Answer 12

F= 1/T or = 1/(2π/B)

Question 13

How to get phase shift in wave characteristics?

Answer 13

Bx + C = 0

Question 14

How to get vertical shift in wave characteristics?

Answer 14

= D

Question 15

Sine law

Answer 15

A/ sin α = B/ sin β

Question 16

Cosine Law

Answer 16

c² = a²+b² - 2ab cos C