How do you prove tan(180°+a) = tan(a)? - Socratic
2016年6月30日 · This result is significant in disclosing that tan function is periodic with period pi=180^o.Use tan(a+b)=(tana+tanb)/(1-tana tanb), b=180^o and tan 180^o=0. Note that the period of sint and cost is 2pi=3680^o and, for tan t, it is pi=180^0#
How do you prove tan(180°-a) = -tan(a)? - Socratic
2016年6月28日 · We use the formula : tan(A-B)=(tanA-tanB)/(1+tanATanB). :. tan(180^o-a)=(tan180^o-tana)/(1+tan180^o*tana). But, tan180^o=0.
What is tan 180 degrees? - Socratic
2015年5月11日 · What is tan 180 degrees? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 Answer Gió ...
How do you evaluate tan(180)? - Socratic
2015年11月16日 · How do you evaluate tan(180)? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 Answer
How do you find the value of tan 150? - Socratic
2015年10月17日 · Learn how to use the formula tan(150) = tan(180 - 30) or tan(150) = tan(180 + (-30)) to simplify the expression. See the detailed explanation and answer with steps on Socratic.
How do you evaluate #tan(210)#? - Socratic
2017年3月6日 · sqrt3/3 Use unit circle and trig table of special arcs: tan (210) = tan (30 + 180) = tan (30) = sqrt3/3
How do you find Tan^-1(-1) without a calculator? - Socratic
2015年11月5日 · Learn how to use the unit circle, the odd-even identity, and the principal value of inverse tangent to solve Tan^-1 (-1) without a calculator. See two different answers and explanations from college students taking Trig.
How do I find the value of tan(180) - 2cos(180) - Socratic
2015年9月18日 · Plug in the following values. tan 180 =0 cos 180= -1 csc 270= csc (360-90)= csc -90 =-csc 90 =-1. sin 90= 1. This would make 0-2-3+1= -4
What is the area of a regular polygon of - Socratic
2017年12月20日 · As we draw perpendicular from center of polygon to base, it forms a right angled triangle with base as #b/2# and height #h# and as theangle shown #theta=(360^@)/n#, the angle #theta/2# in right angled triangle is equal to #(180^@)/n# and
How do you find sine, cosine, tangent of #90^@# or #180
2018年3月10日 · {: (sin(90^circ)=1,color(white)("xx"),sin(180^circ)=0), (cos(90^circ)=0,,cos(180^circ)=-1), (tan(90^circ)" is undefined",,tan(180^circ)=0) :} For the unit circle we have the situations pictured below; 90^circ and 180^circ are limits as the hypotenuse approaches the (positive) vertical axis and the (negative) horizontal axis respectively.