1. What is the value of sin 30 deg?
- A
- B
- C1
- D0
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Answer: A)
By the standard table, sin 30 deg = .
Class 10 Trigonometric Ratios of Standard Angles — practice questions with answers
Trigonometry · 5 sample questions from the school syllabus. Try each one, then open the answer and the worked solution.
2. What is the value of sin 0 deg + cos 0 deg?
- A1
- B0
- C2
- D3
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Answer: A) 1
sin 0 deg + cos 0 deg = 0 + 1 = 1.
3. What is the value of tan 45 deg - tan 0 deg?
- A2
- B0
- C3
- D1
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Answer: D) 1
tan 45 deg - tan 0 deg = 1 - 0 = 1.
4. Evaluate (sin 30 deg + cos 60 deg) / (sin 60 deg + cos 30 deg).
- A
- B
- C1
- D
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Answer: A)
Numerator = = 1. Denominator = . So value = .
5. Evaluate the expression sin 30 deg cos 60 deg + cos 30 deg sin 60 deg + tan 45 deg.
Give the numeric value.
Give the numeric value.
- A2
- B4
- C3
- D1
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Answer: A) 2
sin30 cos60 + cos30 sin60 = sin(30+60) = sin 90 = 1. Adding tan 45 deg = 1 gives 1 + 1 = 2.
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