Sine for OCR A-level Maths
This page covers the following topics:
2. Sine graphs and transformations
Sine of an angle is a ratio between the side opposite to the angle and the hypotenuse of a triangle.
The diagram shows a sine graph.
Find sinB if b = 5 and c = 25.
1/5 or 0.2
Write down the coordinates of point A on the sine graph.
Find sinA if a = 7 cm and c = 10 cm.
7/10 or 0.7
Find a if sinA = 0.5 and c = 8.
Sketch the graph of y = sin(x − π) + 2.
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