Trigonometric Functions

Question 1

Sin θ = ?

Answer 1

y/r

y = opposite leg
r = radius vector

Question 2

Cos θ = ?

Answer 2

x/r

x = adjacent leg
r = radius vector

Question 3

Tan θ = ?

Answer 3

y/x

y = opposite leg
x = adjacent leg

Question 4

Cot θ = ?

Answer 4

x/y

x = adjacent leg
y = opposite leg

Question 5

Sec θ = ?

Answer 5

r/x

r = radius vector
x = adjacent leg

Question 6

Csc θ = ?

Answer 6

r/y

r = radius vector
y = opposite vector