Chapter 3: Trigonometry - Online Test

Q1.
Answer : Option C
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Q2. If cos pθ + cos qθ = 0 and if p ≠ q, then θ is equal to (n is any integer)
Answer : Option B
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Q3. If tanα and tanβ are the roots of x2 + ax + b = 0, then  is equal to
Answer : Option C
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Q4. In a triangle ABC, sin2A + sin2B + sin2C = 2, then the triangle is
Answer : Option C
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Q5. If f(θ) = |sin θ| + |cosθ| , θ R, then f(θ) is in the interval
Answer : Option B
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Q6. cos 6x + 6 cos 4x + 15 cos 2x + 10 / cos 5x + 5 cos 3x + 10 cos x is equal to
Answer : Option D
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Q7. The triangle of maximum area with constant perimeter 12m
Answer : Option A
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Q8. A wheel is spinning at 2 radians/second. How many seconds will it take to make 10 complete rotations?
Answer : Option A
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Q9. If sinα + cosα = b, then sin 2α  is equal to
Answer : Option A
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Q10.

In a ∆ABC, if

(i) sin A/2 sin B/2 sin C/2> 0

(ii) sinAsinB sinC > 0 then
Answer : Option A
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