Rules
What sides do we divide when solving for the sine of an angle?
Opposite/Hypotenuse
Simplify: 25/75
1/3
Simplify: 12/18
2/3
Simplify: 22/44
1/2
sin(42) rounded to four decimal places
.6691
What sides do we divide when solving for the cosine of an angle?
Adjacent/Hypotenuse
A= 3; O = 4; H = 5.
What is the Sine ratio?
4/5
A= 3; O = 4; H = 5.
What is the Cosine ratio?
3/5
A= 3; O = 4; H = 5.
What is the Tangent ratio?
4/3
tan(84) rounded to four decimal places
9.5144
What sides do we divide when solving for the tangent of an angle?
Opposite/Adjacent
A= 7; O = 24; H = 25.
What is the Sine ratio?
24/25
A= 5; O = 12; H = 13.
What is the Cosine ratio?
5/13
A = 6; O = 4; H = sqrt(52)
What is the tangent ratio?
4/6
cos(33) rounded to four decimal places
0.8387
Which ratio would I use if we know the adjacent and opposite sides of an angle A?
Tan A
A= 30; O = 16; H = 34.
What is the Sine ratio?
8/17
A= 9; O = 12; H = 15.
What is the Cosine ratio?
3/5
A= 42; O = 40 ; H = 58.
What is the Tangent ratio?
20/21
tan(56) rounded to four decimal places
1.4826
What does SOH-CAH-TOA stand for?
(Write out each word in order)
Sine, Opposite, Hypotenuse,
Cosine, Adjacent, Hypotenuse,
Tangent, Opposite, Adjacent
A= ★ ; O = ♥ ; H = ■ . What is the Sine ratio?
♥/■
A= ★ ; O = ♥ ; H = ■ . What is the Cosine ratio?
★/■
A= ★ ; O = ♥ ; H = ■ . What is the Tangent ratio?
♥/★
cos(37) rounded to four decimal places
0.7986