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Trigonometry Flashcards

5 cards from real MPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the value of sin(30°)?

    Answer: 1/2

    The sine of 30° is a standard trigonometric value: sin(30°) = 1/2.

  2. Which of the following is the correct identity for cos²(θ) + sin²(θ)?

    Answer: 1

    The Pythagorean identity states that: cos²(θ) + sin²(θ) = 1, which is a fundamental trigonometric identity.

  3. Solve for θ: tan(θ) = 1

    Answer: θ = 45°

    The tangent of 45° is 1 because tan(45°) = sin(45°) / cos(45°) = 1/1 = 1.

  4. What is the value of cos(π/3)?

    Answer: 1/2

    cos(π/3) corresponds to cos(60°), and the value of cos(60°) is 1/2.

  5. If sin(θ) = 3/5, what is cos(θ) when θ is in the first quadrant?

    Answer: 4/5

    Use the Pythagorean identity: sin²(θ) + cos²(θ) = 1. (3/5)² + cos²(θ) = 1, 9/25 + cos²(θ) = 1, cos²(θ) = 1 - 9/25 = 16/25, cos(θ) = √(16/25) = 4/5.