Trig Ratios Essentials

SOH-CAH-TOA and basic definitions. Ideal for board exams and competitive test prep.

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Trig Ratios Essentials
QUESTION NO 01
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sin 90° = ?

Answer: 1
sin 90° = 1.
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QUESTION NO 02
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cos 0° = ?

Answer: 1
cos 0° = 1.
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QUESTION NO 03
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tan 45° = ?

Answer: 1
tan 45° = 1.
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QUESTION NO 04
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sin²θ + cos²θ = ?

Answer: 1
Fundamental Pythagorean identity.
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QUESTION NO 05
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In a right triangle, sin θ = ?

Answer: opposite / hypotenuse
SOH: sine = opposite/hypotenuse.
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QUESTION NO 06
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cos θ = ?

Answer: adjacent / hypotenuse
CAH: cosine = adjacent/hypotenuse.
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QUESTION NO 07
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tan θ = ?

Answer: opposite / adjacent
TOA: tangent = opposite/adjacent.
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QUESTION NO 08
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sin 30° = ?

Answer: 1/2
Standard value: sin 30° = 1/2.
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QUESTION NO 09
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cos 60° = ?

Answer: 1/2
cos 60° = 1/2.
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QUESTION NO 10
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tan 0° = ?

Answer: 0
tan 0° = 0.
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Published By

Shahzad Mahota

@shahzad-mahota

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