a. Draw a sketch of the graph y = sin x and use it to demonstrate why
Question:
a. Draw a sketch of the graph y = sin x and use it to demonstrate why sin x = sin (180° − x).
b. By referring to the graphs of y = cos x and y = tan x, state whether the following are true or false.
i. cos x = cos (180° − x)
ii. cos x = −cos (180° − x)
iii. tan x = tan (180° − x)
iv. tan x = −tan (180° − x)
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Related Book For
Cambridge IGCSE And O Level Additional Mathematics
ISBN: 9781510421646
1st Edition
Authors: Val Hanrahan, Jeanette Powell
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