Right Triangle Trigonometry

Question 1

Formula for Degrees to Radians

Answer 1

n * pi/180

Question 2

Formula for Radians to Degrees

Answer 2

n * 180/pi

Question 3

Ratio of Sin

Answer 3

Opposite over Hypotenuse

Question 4

Ratio of Cos

Answer 4

Adjacent over Hypotenuse

Question 5

Ratio of Tan

Answer 5

Opposite over Adjacent

Question 6

Ratio of CSC

Answer 6

Hypotenuse over Opposite

Question 7

Ratio of Sec

Answer 7

Hypotenuse over Adjacent

Question 8

Ratio of Cot

Answer 8

Adjacent over Opposite

Question 9

Sin 30

Answer 9

1/2

Question 10

Sin 60

Answer 10

sqrt 3/2

Question 11

Sin 45

Answer 11

1/ sqrt 2

Question 12

Cos 30

Answer 12

sqrt 3 / 2

Question 13

Cos 45

Answer 13

1 / sqrt 2

Question 14

Cos 60

Answer 14

1/2

Question 15

Tan 30

Answer 15

1 / sqrt 3

Question 16

Tan 60

Answer 16

sqrt 3

Question 17

Tan 45

Answer 17

1

Question 18

Law of Sines

Answer 18

Sin A / a = Sin B / b = Sin C / c

Question 19

Law of Cosines

Answer 19

a^2 = b^2 + c^2 - (2bc * Cos A)

Question 20

Heron’s Formula (for Area)

Answer 20

s(s-a)(s-b)(s-c) s = a + b + c / 2