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January 25, 2015

January 25, 2015

Posted by **Shreya** on Thursday, January 24, 2013 at 11:15pm.

A (-√3, -√3/2)

B (-√3/2, 1/2)

C (1/2, -√3/2)

D (1/2, -√3 )

I dont get how to figure this out :|

- Pre Calculus 12 -
**Reiny**, Friday, January 25, 2013 at 12:14amAsk yourself, "Which quadrant does 300° fall in" ?

It is in quadrant IV

what does a typical point in quadrant IV look like?

it must be of the type (+ , - )

the only points with that combination is D (1/2,-√3) or C(1/2 , -√3/2)

check:

remember tanØ = y/x

tan 300° = -1.732.. = -√3

for D) : -√3 / (1/2) ≠ -√3

for C) : (-√3/2) / (1/2) - -√3

so it is point C

- Pre Calculus 12 -
**Shreya**, Friday, January 25, 2013 at 12:37amOh that makes sense, thank you :)

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