Class 10 Optional Mathematics | Multiple Angles

Optional Mathematics · Class 10 · Trigonometry

Multiple Angles

2A and 3A · Ten identities · Values and proofs

By the end of this lesson you can

🎯

Say what a multiple angle is

✏️

Derive sin 2A, cos 2A and tan 2A

🔁

Write sin 2A and cos 2A using tan A

3️⃣

Derive sin 3A, cos 3A and tan 3A

✅

Find values and prove identities

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Presenter notes: Today we learn how the ratios of 2A and 3A come from the ratios of A. By the end you will have ten identities you can use to find values and prove results.

Multiple Angles Presentation

By the end of this lesson you can

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