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# really quick trig question watch

1. My mind has drawn a blank with this bit of an equation what do i square 4sin^2(x)? all of it or just the x value? sorry if its a daft question?
2. (Original post by mathslover786)
My mind has drawn a blank with this bit of an equation what do i square 4sin^2(x)? all of it or just the x value? sorry if its a daft question?

It's sort of a confusing notation, but you just square the sin(x) part.

4sin^2(x) = 4 [sin(x)]^2

For some other examples,

You'd square the x part if it was 4sin(x^2)

or

You'd square the entire thing if it was [4sin(x)]^2
3. (Original post by pokerplayer1191)
It's sort of a confusing notation, but you just square the sin(x) part.

4sin^2(x) = 4 [sin(x)]^2

For some other examples,

You'd square the x part if it was 4sin(x^2)

or

You'd square the entire thing if it was [4sin(x)]^2
aha thank you for that!

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Updated: February 7, 2010
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