0 tan0=sin0/cos0 or tan0=0/1=0. How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle?

2015年6月23日 · You can see that when #alpha# becomes very small or zero the length of the red segment, representing the #tan#, becomes small and eventually zero when #alpha=0#. Hope it helps! Answer link

2015年10月21日 · #tan(0)# is "undefined" Explanation: In general based on a triangle with adjacent side on the X-axis and a hypotenuse extending from the origin to a point on the unit circle #tan# is defined as

2016年12月1日 · theta=0 Find tan^-1 (0) without a calculator. tan^-1(0) refers to the ANGLE whose tangent equals zero. Recall the identity tantheta = sintheta/costheta If tantheta=0, then the numerator of sintheta/costheta must also equal zero. So, sintheta"=0. Referring to the unit circle, the angles with a sine of zero are theta =0, pi.

What is tan(0)? The Unit Circle: In trigonometry, the unit circle is a handy tool that we can use to ...

2016年7月19日 · When tanx = 0, x = npi for some integer n. tanx = sinx/cosx = 0 <=> sinx = 0 <=> x = npi, n in ZZ Thus ...

2017年9月28日 · Which happens when theta = 0, pi, 2pi, (etc.) For the inverse trig functions, you use only the first angle in this list. So therefore, you can deduce that tan^-1(0) = 0 GOOD LUCK!

2015年6月16日 · tan(x)+sqrt3=0 has two solutions: x_1 = -pi/3 x_2 = pi-pi/3 = (2pi)/3 The equation tan(x)+sqrt3=0 can be rewritten as tan(x)=-sqrt3 Knowing that tan(x) = sin(x)/cos(x ...

2015年11月21日 · arctan(0) = 0 arctan(0) is at which at which x tan(x) = 0 and -pi/2 < x < pi/2 (or -90 < x < 90 if you use degrees) tan(x) = sin(x)/cos(x) tan(x) = 0 when sin(x) = 0 Use the attached unit circle from wikipedia: x = 0+n*2*pi or x = pi+n*2*pi so in this case x= n*pi where n is an integer Only x = 0 satisfies -pi/2 < x < pi/2 sin(0)=0 tan(0)=0 arctan(0)=0

2016年5月12日 · Both tan theta and sin theta are < 0 in the fourth quadrant Q4. Both sec theta and tan theta are < 0 in Q2.. All are > 0 for theta in the first quadrant Q1(0, pi/2), sine and csc only are > 0 for theta in Q2(pi/2, pi), tangent and cotangent only are > 0 for theta in Q3(pi. (3pi)/2) and cosine and secant only are > 0 for theta in Q4((3pi)/2, pi). Accordingly, both tan theta and sin …