Angles, ratios, identities, inverse functions and applications.
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Q1 · Trigonometry · EASY
If sin θ = 3/5 and θ lies in the second quadrant, what is the value of tan θ?
Q2 · Trigonometry · MEDIUM
What is the value of sin 15°?
Q3 · Trigonometry · MEDIUM
If tan A + cot A = 2, then what is the value of tan² A + cot² A?
Q4 · Trigonometry · EASY
In a triangle ABC, if a = 7, b = 24 and c = 25, what is the value of sin C?
Q5 · Trigonometry · HARD
If sin⁻¹(x) + sin⁻¹(2x) = π/3, then what is the value of x?