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Q1:
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Given three sides of a non-right-angled triangle, which of the following would you use to find one of the angles? |
A. Sine Rule
B. Cosine Rule
C. Area Formula
D. Laws of Indices |
Answer 1: |
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Q2:
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Fred is using the cosine rule to find an angle P.
He writes 36 = 296 - 280cosP
A correct statement that follows this is: |
A. 332 = 280cosP
B. 260 = -280cosP
C. 36 = 16cosP
D. -260 = -280cosP |
Answer 2: |
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Q3:
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The value of sin C is:
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A 56 sin 20°
B. 
C. 
D.  |
Answer 3: |
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Q4:
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The best expression to use to find the length of side BC is
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A. 
B. 
C.
D.  |
Answer 4: |
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Q5:
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In using the Cosine Rule, a student wrote
x2= 36 + 49 - 84cos 40°
The statement that follows from this is:
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A. x2 = 36 - 35cos40°
B. x2 = 85 - 84cos40°
C. x2 = 1cos40°
D. x2 = 6+7 - 9.2cos40°
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Answer 5: |
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Q6:
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If x =  find x (to 2 s.f.)
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A. 1.8
B. 1.83
C. 1.4
D. 3.3 |
Answer 6: |
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Q7:
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A line in a calculation using the Cosine Rule is
cosA =
What is the size of angle A (to 1 d.p.)? |
A. 64.3°
B. 28.8°
C. 25.7°
D. 61.2° |
Answer 7: |
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Q8:
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If x2 = 36 - 35cos 35°, what is x? (to 2 sig.fig.) |
A. 2.7
B. 0.82
C. 7.3
D. 54 |
Answer 8: |
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Q9:
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Find the square root of 105 to 3 significant figures. |
A. 10.2
B. 10.25
C. 10
D. 11025 |
Answer 9: |
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Q10:
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Which of the following would you use to find the length of DG?
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A.Sine Rule
B.Cosine Rule
C.Pythagoras' Theorem
D.Area Formula |
Answer 10: |
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