Sine
What is the value of sin(30) ?
0.5
What is the ratio for cosine?
adjacent/hypotenuse
What is the value of tan(0.56)?
Round to the nearest hundredth.
0.01
Which trig function uses the ratio adjacent/opposite?
NONE!
What does SOH CAH TOA mean? Make sure to tell me what EVERY letter means.
SOH: Sine = opposite/hypotenuse
CAH: Cosine = adjacent/hypotenuse
TOA: Tangent = opposite/adjacent
What is the value of sin(12) rounded to the nearest hundredth?
0.21
What is the value of cos(22)?
Round to the nearest hundredth.
0.93
What is the ratio for tangent?
opposite/adjacent
When do you use inverse functions?
To find the angle.
Which trig function uses the ratio adjacent/hypotenuse?
Cosine
What is the ratio for sine?
opposite/hypotenuse
What is the value of inverse cosine of 2/3?
Round to the nearest hundredth.
48.19 degrees
What is the value of inverse tangent of 5/6?
Round to the nearest hundredth.
39.81 degrees
What trig function would you use to find the value of the angle if:
-hypotenuse = 15 inches
-opposite = 3 inches
Inverse sine
What are ALWAYS the units for the answers to inverse functions?
degrees
Find the angle value if the opposite is 17 and the hypotenuse is 23.
Round to the nearest hundredth.
47.66 degrees
Find the value of the angle if:
-adjacent = 6
-hypotenuse = 14
Round to the nearest hundredth.
64.62 degrees
Find the value of the opposite side if:
-reference angle = 61
-adjacent = 12 meters
Round to the nearest hundredth.
21.65 meters
Board: #1
Solve the triangle. Round answers to the nearest hundredth.
Angle L = 43 degrees
Side AL = 8.58 feet
Side SL = 11.73 feet
For what type of triangles do we use trig functions (sine, cosine, tangent)?
Find the value of opposite side if:
the hypotenuse is 10
the reference angle is 52
Round to the nearest hundredth.
7.88
Find the value of the hypotenuse if:
-reference angle = 34 degrees
-adjacent = 60 feet
Round to the nearest hundredth.
72.37 feet
What is the value of the adjacent side if:
-opposite = 3 feet
-reference angle = 71 degrees
Round to the nearest hundredth.
1.03 feet
Board: #2
Solve the triangle. Round answers to the nearest hundredth.
Angle J = 35.15 degrees
Angle S = 54.85 degrees
Side JE = 26.98 miles
Using tangent or inverse tangent, what is the value of the adjacent side if:
-reference angle = 12 degrees
-hypotenuse = 21
Round to the nearest hundredth.
You can not calculate the adjacent side using tangent without knowing the opposite side.