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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
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.
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AHL 3.9
If we take the identity sin2θ+cos2θ=1 and divide through by sin2θ we find
Example
Show that 1+cot2θ1=sin2θ.
Using the new identity:
But cosecθ1=sinθ, so cosec2θ1=sin2θ.
AHL 3.9
If we take the identity sin2θ+cos2θ=1 and divide through by sin2θ we find
Example
Show that 1+cot2θ1=sin2θ.
Using the new identity:
But cosecθ1=sinθ, so cosec2θ1=sin2θ.