2016年5月29日 · How do you evaluate #tan 45#? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 Answer

sin45 = 1/sqrt2 cos45=1/sqrt2 tan45 = 1. How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle?

2018年6月2日 · tan (pi/4)=1 pi=180˚ therefore pi/4=45˚ hence tan 45˚=1 The reason pi equals 180˚ is that the circumference of a circle is 360˚ C=2pir=360˚ which is one full rotation of r now 180˚ is 1/2 a rotation of r which equals 1/2 * 2pi= pi therefore pi=180˚

2016年7月20日 · Equating the denominator to 0, tan^2 45^o=1 and tan 45^o=+-1 The first quadrant tangent tan 45^o > 0. So, tan 45^o = 1.. Note that tan x is discontinuous at x = 90^ and that limits tan 90+-^o=+-oo#.

2016年12月17日 · Use the trig identity: #tan (a + b) = (tan a + tan b)/(1 - tan a.tan b# We get: #tan (x + 45) = (tan 45 + tan x)/(1 - tan x.tan 45)#

2015年10月16日 · Find exact value of tan (45 + 30). Ans: (sqrt3 + 1)/(sqrt3 - 1) tan (45 + 30) = (sin (45 + 30))/(cos (45 + 30)) Find sin (45 + 30) and cos (45 + 30) sin (45 + 30 ...

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2015年9月7日 · -1 tan(-45)= - tan45 = -1. How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle?

2014年10月24日 · The special triangles, #30:60:90 and 45:45:90#, allow us to evaluate sine and cosine and tangent. We leverage that information to evaluate tan(105).