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# Category: A-level

## Equations with reciprocal trigonometric functions (supercharged)

## Trigonometric identities 1 (supercharged)

## Trigonometric identities 2 (supercharged)

## Addition formulae (supercharged)

## Using the angle addition formulae 1 (example-problem pair)

## Using the angle addition formulae 2 (example-problem pair)

## Double angle formulae (example-problem pairs)

## Yr 13 trigonometric equations 1 (reflection example)

## Yr 13 trigonometric equations 2 (reflection example)

## Harmonic form with sine (example-problem pair)