Chapter 7 Review
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Transcript of Chapter 7 Review
Angles All about Sides
Special Triangles Trig Ratios Solving
Triangles
10 10 10 10 10
20 20 20 20 20
30 30 30 30 30
40 40 40 40 40
50 50 50 50 50
Question 1 - 10
Find Cos(42o)
(round to the nearest four places)
Answer 1 – 10
• .7431
Question 1 - 20
Find angle ACos(A)=1/2
Answer 1 – 20
60 degrees
Question 1 - 30
Find angle ATan(A)=1
Answer 1 – 30
45 degrees
Question 1 - 40
Solve for XX
815
Answer 1 – 40
58 degrees
Question 1 - 50
Solve for X
X
55
89
Answer 1 – 50
38 degrees
Question 2 - 10
• Tell whether the number represent and acute obtuse, right or no triangle
2, 20, 22
Answer 2 – 10
No triangle 2+20=22
Question 2 - 20
• Tell whether the number represent and acute obtuse, right or no triangle
4, 11, 13
Answer 2 – 20
Obtuse
Question 2 - 30
• Solve for X• (round to 2 decimal places)
510
8
X
Answer 2 – 30
Cos(51)=8/x8/Cos(51)= x
X=12.71
Question 2 - 40
700
8
X
Answer 2 – 40
•X = 21.98
Question 2 - 50
Solve for x and Y
630
8
X
Y0
Answer 2 – 50
•X=7.13• Y= 27 degrees
Question 3 - 10
• Solve for X
450
8X
Answer 3 – 10
X = 8√2
Question 3 - 20• Solve for X
300
5
X
Answer 3 – 20
X = 10
Question 3 - 30
• Solve for X and Y300
X
Y6
Answer 3 – 30
X = 2√3Y = 4√3
Question 3 - 40
• Name the rules in a 45-45-90 when going from a leg to HYP and HYP to leg
Answer 3 – 40
• Leg HYP = Leg * √2• HYP Leg = HYP / √2
Question 3 - 50
• Name the Rules in a 30-60-90 when going from the Short Leg to the Long Leg and the HYP and also Back
Answer 3 – 50
SL HYP = SL * 2HYP SL = HYP / 2
SL LL = SL * √3LL SL = LL / √3
Question 4 - 10
• Find the Tangent ratio of the angle
8
157
Answer 4 – 10
• Tan = 8/7
Question 4 - 20
• Find the Cosine and Sine ratios of the angle
8
157
Answer 4 – 20
Cos = 7/15Sin = 8/15
Question 4 - 30
•Define all Trig Ratios
Answer 4 – 30
•Sine = Opposite/Hyp•Cosine=Adjacent/Hyp•Tangent=Opposite/Hyp
Question 4 - 40
• Solve• Lauren want to measure the height of a
building. She stands 150ft from the base of the building. She measure the angle of elevation from a point on the ground to the top of the building to be 500. Estimate the height of the building.
Answer 4 – 40
Height = 178.76ft
Question 4 - 50
A
7
18
• Find all three trig ratios of angle A
10
Answer 4 – 50
• Sin(A)= 7/18• Cos(A)= 10/18 = 5/9• Tan(A)= 7/10
Question 5 - 10
• The perimeter of a square is 24in. Find the length of the diagonal.
Answer 5 – 10
•6√2in
Question 5 - 20
• Solve for the missing angle (round to the nearst degree)
A
125
Answer 5 – 20
• Angle A = 22.6 degrees
Question 5 - 30
13
Y
• Solve the triangle
X
Y
10
Z
Answer 5 – 30
• Z= 13• X= 67.38 degrees• Y=45.24 degrees
Question 5 - 40
• Solve for all parts of the triangle
A
155
B
X
Answer 5 – 40
• A= 70.53 degrees • B= 19.47 degrees • X=10√2
Question 5 - 50
• Solve for all parts of the triangle. Round decimals to the nearest tenth.
15Y
250
X
Answer 5 – 50
X =13.59Y = 6.34