Nov 17, 2017 · tan(45^@)=1 sin(45^@)=sqrt2/2 cos(45^@)=sqrt2/2 45^@ is a special angle, along with 30^@, 60^@, 90^@, 180^@, 270^@, 360^@. tan(45^@)=1 sin(45^@)=sqrt2/2 cos(45 ...

Mar 26, 2018 · A 45-45-90 triangle has legs of identical length and a hypotenuse of #sqrt2# times that. By SOHCAHTOA, tangent is opposite over adjacent, which are the two legs. Since they have the same length, #tan(45 ^circ) = 1#

May 29, 2016 · How do you evaluate #tan 45#? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 Answer

Oct 16, 2015 · 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 ...

Mar 10, 2018 · 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?

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

Nov 5, 2015 · The answer is -pi/4 Alright, archtan / tan^-1(x) is the inverse of tangent. Tan is sin/cos. Like the inverse of sin, the inverse of tan is also restricted to quadrants 1 and 4. Knowing this we are solving for the inverse of tan -1. We are basically being asked the question what angle/radian does tan(-1) equal. Using the unit circle we can see that tan(1)= pi/4. Since the …

Jul 20, 2016 · 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#.

Dec 17, 2016 · 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)#

May 3, 2016 · Let us start from Right Hand Side. #tan(pi/4+A/2)# = #(tan(pi/4)+tan(A/2))/(1-tan((pi)/4)tan(A/2)# = #(1+tan(A/2))/(1-1*tan(A/2)#