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1 of 8
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Lesson
Practice
Choose a trigonometric ratio
DIFFICULTY
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QUESTION TYPE
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Side-pair diagram 1
Side-pair diagram 2
Side-pair diagram 3
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Question 1 of 8
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Triangle BCA. Right angle at A; marked acute angle theta at B. BC = 38 cm, CA = x cm. Not to scale.
38 cm
x cm
B
C
A
θ
Triangle BCA. Not to scale
1 mark
Choose the ratio needed to find the missing length
Cosine
Sine
Tangent
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