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March 31, 2015

March 31, 2015

Posted by **Katy** on Monday, February 13, 2012 at 7:50pm.

sin A

cos A

tan A

csc A

sec A

cot A

- Algebra 2 -
**Reiny**, Monday, February 13, 2012 at 8:09pmclearly your point is in the first quadrant, so all trig ratios will be positive.

from (63,280)

x = 63, y = 280

r^2 = x^2 + y^2 = 63^2+280^2 = 82930

r = √82930

You should know the trig ratios in terms of

x, y and r

e.g.

tan A = y/x = 280/63 = 40/9

sec A = r/x = √82930/63

etc.

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