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Tangent repeats every 180 degrees, so Tan(180 + a) = tan(a). This site has several useful identities.
http://www.mathwords.com/t/trig_identities.htm
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What is 180 plus 180 plus 180 plus 180 plus 180 plus 180 plus 180 plus 180?
8 x 180 = 1,440
What 180 plus 124?
180 plus 124 = 304
What are the six trigonometric functions of 180 degrees?
sin(180) = 0 cos(180) = -1 tan(180) = 0 cosec(180) is not defined sec(180) = -1 cot(180) is not defined.
What is 180 plus 170 plus 120 plus 180 plus 110 plus 130 plus 160 divided by 7?
150
What is 180 plus 170 plus 120 plus 180 plus 110 plus 160 plus 130?
This is addtion. These numbers added to gether will give you 1050.
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