Re: Help- trigonometry

On Sun, 15 Jan 2006 12:50:06 UTC, hannah_jasmine@xxxxxxxxxxxxx wrote:

:
: How do you find cos and tan, when you only know sin and whether it is
: acute or obtuse?

There are two ways, really.

You can either start from sin to work out the sides of a right angled
triangle, then go to cos, or you can go from sin to cos directly if
you know a relation between them.

Ian
.

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