Trigonometric Functions

Question 1

Sine (SIN)

Answer 1

opp / hyp

Question 2

Cosine (COS)

Answer 2

adj / hyp

Question 3

Tangent (TAN)

Answer 3

opp / adj

Question 4

Cosecant (CSC)

Answer 4

[1/SIN] = hyp / opp

Question 5

Secant (SEC)

Answer 5

[1/COS] = hyp / adj

Question 6

Cotangent (COT)

Answer 6

[1/TAN] = adj / opp

Question 7

Special Angles
45º

same^2 + same^2 = Hyp^2

Answer 7

45Ø = pi/4
SIN 45º = (2root2)/2
COS 45º = (2rot2)/2
TAN 45º = (2root2/2/2root2/2) = 1

Question 8

Special Angles 
30º
45º
and 
60º

Answer 8

30Ø = pi/6
SIN 30º = 1/2 = “Y” VALUE
COS 30º = R3/2 = “X” VALUE
TAN 30º = R3/3 = “Y/X” VALUE

45Ø = pi/4
       SIN 45º = (2root2)/2 = "Y" VALUE
       COS 45º = (2rot2)/2 = "X" VALUE 
       TAN 45º = (2root2/2/2root2/2) = 1 = "Y/X"  
                           VALUE

60Ø = pi/3
SIN 60º = R3/2 = “Y” VALUE
COS 60º = 1/2 = “X” VALUE
TAN 60º = R3= “Y/X” VALUE

*Hints to remember:
(a) Ø switches value for 3 and 6 , contestant with 4
(b)