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Matrices. Maths Supporting SET. STEM - living world. Mathematical modelling. Biology. Physics. Chemistry. Investigations. Engineering. Vectors.

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Broad Topics > Pythagoras and Trigonometry > Trigonometric functions and graphs

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Age 14 to 18 Challenge Level:

Explore the properties of combinations of trig functions in this open investigation.

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Sine and Cosine

Age 14 to 16 Challenge Level:

The sine of an angle is equal to the cosine of its complement. Can you explain why and does this rule extend beyond angles of 90 degrees?