# trig

posted by sal

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

1. Henry

V(0,0), T(-12,5)

X = -12 - 0 = -12.
Y = 5- 0 = 5.
r = Sqrt(X^2+Y^2) = Sqrt(144+25) = 13

Sin A = Y/r = 5/13.
Cos A = X/r =
Tan A = Y/X

CSC A = r/Y
Sec A =
Cot A =

NOTES:
V = Vertex.
T = Terminal side.
Sqrt = Square root.

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