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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry PROGRAMME F9 TRIGONOMETRY

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Rotation Radians Triangles Trigonometric ratios Reciprocal ratios Pythagoras ’ theorem Special triangles

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Rotation When a straight line is rotated about a point it sweeps out an angle that can be measured in degrees or radians A straight line rotating through a full angle and returning to its starting point is said to have rotated through 360 degrees – 360° One degree = 60 minutes and one minute = 60 seconds

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Radians When a straight line of length r is rotated about one end so that the other end describes an arc of length r the line is said to have rotated through 1 radian – 1 rad

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Triangles All triangles possess shape and size. The shape of a triangle is governed by the three angles and the size by the lengths of the three sides

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Reciprocal ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Pythagoras ’ theorem The square on the hypotenuse of a right- angled triangle is equal to the sum of the squares on the other two sides

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Special triangles Right-angled isosceles

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Special triangles Half equilateral

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Special triangles Half equilateral

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric identities The fundamental identity Two more identities Identities for compound angles

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric identities The fundamental identity The fundamental trigonometric identity is derived from Pythagoras ’ theorem

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric identities Two more identities Dividing the fundamental identity by

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric identities Two more identities Dividing the fundamental identity by

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Angles Trigonometric identities Trigonometric formulas

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric formulas Sums and differences of angles Double angles Sums and differences of ratios Products of ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric formulas Sums and differences of angles

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric formulas Double angles

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric formulas Sums and differences of ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Trigonometric formulas Products of ratios

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STROUD Worked examples and exercises are in the text Programme F9: Trigonometry Learning outcomes Convert angles measured in degrees, minutes and seconds into decimal degrees Convert degrees into radians and vice versa Use a calculator to determine the values of trigonometric ratios for any acute angle Verify trigonometric identities

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