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HT3: right angle triangles / non right angle triangles Flashcards | StudBud
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HT3: right angle triangles / non right angle triangles
HT3: right angle triangles / non right angle triangles
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HT3 Review
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Questions
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Answers
1
Using trigonometry you can
calculate angles
calculate RATIOS OF 2 FIGURES
calculate heights
calculate unknown side lengthS OF A PARALLELOGRAM
2
What is the measure of side AC? Use your trigonometry ratios and round to (1dp)
26.8
26.83
26.833
26.8325
3
Use the sine rule to find "x"
69.0
69.5
65.0
65.5
4
Which trigonometry strategy should you use for the following triangle?
Sine Law
Cosine Law
Pythagorean Theorem
SOH CAH TOA
5
Which trigonometry strategy should you use for the following triangle?
SOH CAH TOA
Pythagorean Theorem
Sine Rule
Cosine Rule
6
Which trig function should use use to find x?
Cos
Tan
Sin
7
SOH CAH TOA
CAH
CAH
TOA
IDK!
8
SOH CAH TOA
TOA
CAH
WYM
SOH
9
Use the Cosine rule to find the value of
x
to two decimal places
32.45
32.44
32.5
32.4
10
Calculate the area of this triangle
279 square cm
307 square cm
130 square cm
365 square cm
11
What trig ratio would you use to solve this triangle?
cos
sin
tan
12
Use Pythagoras Theorem to calculate:
14.86
221
14.87
21
13
Use trig to find the value of z.
6.6
9.3
25
10
14
Pythagoras or Trigonometry?
Trigonometry
Neither
Pythagoras
15
The word trigonometry means “______________ _____________”.
Triangle Measure
<p>Triangle Mathematics</p>
Metric Triangle
Geometry, Part 2
16
Using the sine rule find "C" to the nearest whole number
22 m
22.6m
23 m
23.6m
17
Find the angle
a
°
101.9
110.5
104.6
98.3
18
What is Pythagoras Theorem?
SACHOTHAO
a2 + b2 = c2
SOHCAHTOH
c2 = a2 + b2
19
Which trigonometry strategy should you use for the following triangle?
Sine Law
Cosine Law
Pythagorean Theorem
SOH CAH TOA
20
Pythagoras or Trigonometry
Neither
Sine Rule
Pythagoras
Trigonometry
21
Which trigonometry strategy should you use for the following triangle?
Sine Rule
Cosine Rule
SOH CAH TOA
Pythagorean Theorem
22
Sine Rule, Cosine Rule, or Neither to work out CA?
Neither
pythagoras
Sine Rule
Cosine Rule
23
Pythagoras or Trigonometry
Pythagoras
Trigonometry
Cosine Rule
Neither
24
What do you use trigonometry for
Find sides of triangles
fun
Find out how many sides
Find angles of triangles
25
When do you use sine rule?
3 given sides
2 given sides, 1 given angle
3 given angles
2 given angles and 2 given sides
26
What is the area of the triangle
(1sf)?
65cm2
68.9cm2
66.4cm2
70cm2
27
Use the sine rule to calculate
BC
.
13.9
12.2 cm
20.8 cm
12.2 cm
28
What phrase to remember the trigonometry functions
SAH-COA-TOH
SCT-OHO-HHA
SOH-CAH-TAO
SOH-CAH-TOA
29
Sine Rule, Cosine Rule, or Neither?
Sine Rule
Cosine Rule
Neither
Trigonometry
30
Use Cosine rule to find
x
to one decimal place
13.0
13.0385
13.03
13.1
31
Use trig to find the value of x.
6.6
9.3
10
25
32
Would you use the sine rule, the cosine rule, SohCahToa or Pythagoras' Theorem?
Pythagoras
Sine
Cosine
SohCahToa
33
Calculate the area of the triangle
50.8cm2
102cm2
89cm2
25.4cm2
34
SOH CAH TOA
SOH
TOA
IDK!
CAH
35
What trig ratio would I use to find AC?
Tan
Sin
Cosine
Cos
36
What is the area of the triangle (3sf)?
130cm2
127cm2
None of the options
126.9cm2
37
Use trig to find the value of y.
10
9.3
6.6
25
38
Use the Cosine rule to find the value of
x
to the nearest whole number
16
15.8
15.85
15
39
Which trig function would you use to solve this triangle?
sin
cos
tan
40
SOH CAH TOA
CAH
TOA
SOH
Pythagoras
41
Use Pythagoras to find the slope length
2.64
5
6
7
42
Which rule would you use to solve this problem?
I don't know
Cosine Rule
Sine Rule
Neither - not enough information
43
What is the area of the triangle (2dp)?
19.32cm2
19.31cm2
17.76cm2
38.64cm2
44
Sine Rule, Cosine Rule, or Neither?
Cosine Rule
Sine Rule
Neither
45
To calculate the area of this triangle, which is correct?
0.5 x 6 x 9 x sin(70)
0.5 x 6 x 70 x 9
0.5 x 6 x 9 x sin(110)
0.5 x 6 x 9
46
Which trigonometry strategy should you use for the following triangle?
Pythagorean Theorem
Sine Law
Cosine Law
SOH CAH TOA
47
Sine Rule, Cosine Rule, or Neither?
Neither
Pythagoras
Cosine Rule
Sine Rule
48
Would you use the sine rule, the cosine rule, SohCahToa or Pythagoras' Theorem?
Sine
SohCahToa
Cosine
Pythagoras
49
Use Pythagoras Theorem to calculate:
221
14.87
14.86
21
50
Would you use the sine rule, the cosine rule, SohCahToa or Pythagoras' Theorem?
Cosine
Pythagoras
SohCahToa
Sine
51
Use Pythagoras Theorem to calculate:
14.87
221
21
14.86
52
Use Pythagoras Theorem to calculate:
7.62
58
77.62
10
