Need help for 8i), 8iv), and 9iii)—>for some reason I got -sin(90-ϑ)

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secondary 3 A Maths

Need help for 8i), 8iv), and 9iii)—>for some reason I got -sin(90-ϑ)

Date Posted: 6 years ago

Wen

6 years ago

Also, what’s the meaning of a function mapping onto itself ?

Lawrence Lim

6 years ago

f(x)=x. Ur original value after going thru the function (map) still get back same thing.

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Date Posted: 6 years ago

Wen

6 years ago

I get it now thank you!