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1 of 8
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Lesson
Practice
Choose a trigonometric ratio
DIFFICULTY
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Side-pair diagram 1
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Question 1 of 8
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Triangle CBA. Right angle at A; marked acute angle theta at B. BA = 41 cm, CA = x cm. Not to scale.
x cm
41 cm
C
B
A
θ
Triangle CBA. Not to scale
1 mark
Choose the ratio needed to find the missing length
Tangent
Cosine
Sine
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