Day3.UnitCircleExactValues.17.notebook
January 17, 2017
Topic: Trig Functions
Aim: How do we find exact function values using special right
triangles?
Hmwk: Text pg. 372 #21-26
pg. 380 #4-32 even, #33-35
Do Now:
1) Name the quadrant in which θ lies.
2) Find the exact value:
a) cos 2700
y
( 0 ,1 ) 90o
b) sin 900
c) tan 1800
0o ( 1, 0 )
( ­1, 0 ) 180o
x
(0 , ­1 ) 270o
Jan 31­9:38 AM
Jan 10­9:50 AM
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Day3.UnitCircleExactValues.17.notebook
January 17, 2017
Jan 10­9:54 AM
Jan 10­9:54 AM
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Day3.UnitCircleExactValues.17.notebook
January 17, 2017
Exercise #4: For each of the following angles, find the exact value.
(a) cos 300
(b) sin 300
(c) tan 300
(d) cos 450
(e) sin 450
(f) tan 450
(g) cos 600
(h) sin 600
(i) tan 600
Jan 10­10:00 AM
Exercise #5: For the following evaluate and place all answers in simplest form. a) sin 30 ­ cos 60
b) sin 45 + cos 45
c) (sin 60)(cos 60) d) (cos 45)2
Feb 13­3:02 PM
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Day3.UnitCircleExactValues.17.notebook
January 17, 2017
Exercise #6: For the following evaluate and place all answers in simplest form. a) cos2 30 ­ sin2 30
c) sin 90 ­ cos 0 b) (sin 60)(cos 30) + tan 60
d) cos 180 sin 45 cos 30 Feb 13­3:05 PM
Summary: How do we find exact values using special right triangles?
Jan 11­9:51 AM
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