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    IB Math AASL
    /
    Trig equations & identities
    /

    Video

    Video Reviews

    Watch comprehensive video reviews for most units, designed for final exam preparation. Each video includes integrated problems you can solve alongside detailed solutions.

    Not your average video:

    Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.

    Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.

    Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.

    Not your average video:

    Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.

    Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.

    Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.

    Trig equations & identities

    Video Reviews

    Watch comprehensive video reviews for Trig equations & identities, designed for final exam preparation. Each video includes integrated problems you can solve alongside detailed solutions.

    Not your average video:

    Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.

    Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.

    Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.

    Not your average video:

    Interactive Problems: Solve problems alongside the video with step-by-step guidance and detailed solutions.

    Exam Preparation: Complete unit reviews designed for final exam preparation with all key concepts covered systematically.

    Expert Teaching: High-quality instruction from Perplex co-founder James Mullen with clear explanations, worked examples, and exam tips.

    Unit circleTrig functionsTrig equationsIdentitiesHL functionsHL Identities

    The video will automatically pause when it reaches a problem.

    Key values of sin, cos & tan

    SL 3.5

    The following table shows the values of sinθ and cosθ for the so called critical angles θ. These are angles that give "nice" values for sin and cos:

    θ (rad)

    sinθ

    cosθ

    0

    0

    1

    6π​

    21​

    2√3​

    4π​

    2√2​

    2√2​

    3π​

    2√3​

    21​

    2π​

    1

    0

    It might be helpful when memorizing these to notice:

    θ sinθ cosθ​0 √40​​ √44​​​6π​ √41​​ √43​​​4π​ √42​​ √42​​​3π​ √43​​ √41​​​2π​ √44​​ √40​​​

    Key values of sin, cos & tan

    SL 3.5

    The following table shows the values of sinθ and cosθ for the so called critical angles θ. These are angles that give "nice" values for sin and cos:

    θ (rad)

    sinθ

    cosθ

    0

    0

    1

    6π​

    21​

    2√3​

    4π​

    2√2​

    2√2​

    3π​

    2√3​

    21​

    2π​

    1

    0

    It might be helpful when memorizing these to notice:

    θ sinθ cosθ​0 √40​​ √44​​​6π​ √41​​ √43​​​4π​ √42​​ √42​​​3π​ √43​​ √41​​​2π​ √44​​ √40​​​
    Unit circleTrig functionsTrig equationsIdentitiesHL functionsHL Identities