5.2                        :                     

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Title: Feb 25­3:33 PM (1 of 5)

Find the exact values of the trig expressions.

1. sin 90o + tan 45o 1 + 1

2

2. sin 45o cos 45o (√2/2)(√2/2) (√4/4) 2/4 = 1/2

3. 2 sin π/3 ‐ 3 tan π/6 2(√3/2) ‐ 3(√3/3) √3 ‐ √3 0

Title: Feb 25­3:33 PM (2 of 5)

Find the approximate values of the trig functions using a calculator. Round each value to two decimal places.

1. tan π/18 0.18

2. csc 64o 1.11

3. sec 5π/13 2.82

Title: Feb 25­3:33 PM (3 of 5)

2

­3C

­2

­2C

C2 = 22 + (­3)2C = √13

C2 = (­2)2 + (­2)2C = √8 C = 2√2

θ θ

Find the exact values of the six trig functions when a point on the terminal side of an angle θ is given.

1. (2, ‐3) 2. (‐2, ‐2)

sin θ = sin θ =

cos θ = cos θ =

tan θ = tan θ =

csc θ = csc θ =

sec θ = sec θ =

cot θ = cot θ =

Title: Feb 25­3:33 PM (4 of 5)

HOMEWORK:

page 38

4 (30

‐ 44 e

ven, 70 ‐

78 all

, 84 ‐

90 even)

Title: Feb 25­3:33 PM (5 of 5)