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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
Wiki User
∙ 7y ago
Wiki User
∙ 7y agotan(180 + a) = tan(a).
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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 plus 54 equals 180?
It is: 126 plus 54 = 180
Find the value of tan 180 plus 15?
For tan(180 degrees), this is simply sin(180 degrees)/cos(180 degrees). To find these values, note that 180 degrees is the leftmost point on the unit circle, at y=0, x=-1, so is tan(180 degrees)=0/-1=0. Then adding 15 gives 15.
What is 180 plus 180 plus 180 plus 180 plus 180 plus 180 plus 180 plus 180?
8 x 180 = 1,440
How do you find the value of tan 135?
tan(135) = -tan(180-135) = -tan(45) = -1
How do you calculate trigonometric ratios of obtuse angles?
If ø is an obtuse angle then (180 - ø) is an acute angle and: sin ø = sin (180 - ø) cos ø = -cos (180 - ø) tan ø = -tan (180 - ø)
Tan 9 plus tan 81 -tan 27-tan 63?
tan(9) + tan(81) - tan(27) - tan(63) = 4
What is periodical in reference to math?
It is used when a function takes the same values after some fixed interval, and multiples of that interval. For example, tan(x) = tax(x + 180) = tan(x + 360) = tan(x + n*180) for all integer values of n. So tan is said to be periodic, with period 180 degrees (or π radians).
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 tan20 tan31 plus tan32 tan38 plus tan 38 tan 20?
It is approx 0.9725
What plus what equals 180?
100+80, 99+81, 98+82....
Why tangent 360 degree is equal to zero?
The tangent function is a periodic function with period 180 degrees sotan(360) = tan(360-2*180) = tan(0) = 0.
What is a plus 3a plus 5a equals 180?
a + 3a + 5a = 180 9a =180 a = 20
