About Transcript With the unit circle and the Pythagorean theorem, we can find the exact sine, cosine, and tangent of the angles π/6 and π/3. Created by Sal Khan. Questions Tips & Thanks Want to join the conversation? Sort by: Top Voted chandy.ashwin08 7 months ago trig is scary • ( 19 votes) Upvote Flag yikian2021 7 months ago Trigonometry Find the Exact Value cos (pi/3) cos ( π 3) cos ( π 3) The exact value of cos(π 3) cos ( π 3) is 1 2 1 2. 1 2 1 2 The result can be shown in multiple forms. Exact Form: 1 2 1 2 Decimal Form: 0.5 0.5 π = pi = 3.1415926535898 √ = square root Use this circle calculator to find the area, circumference, radius or diameter of a circle. Given any one variable A, C, r or d of a circle you can calculate the other three unknowns. Units: Note that units of length are shown for convenience. Weisstein, Eric W. "Trigonometry Angles--Pi/3." From MathWorld --A Wolfram Web Resource. https://mathworld.wolfram.com/TrigonometryAnglesPi3.html Subject classifications Construction of the angle pi/3=60 degrees produces a 30-60-90 triangle, which has angles theta=pi/3 and theta/2=pi/6. Explanation: For sin pi/3, the angle pi/3 lies between 0 and pi/2 (First Quadrant ). Since sine function is positive in the first quadrant, thus sin pi/3 value = √3/2 or 0.8660254. . . Since the sine function is a periodic function, we can represent sin pi/3 as, sin pi/3 = sin (pi/3 + n × 2pi), n ∈ Z. The value of pi is 3.14159, an irrational number. Pi is a constant value. That is, the ratio of the circumference to the diameter is the same for all circles. The drawing below shows the circumference of a circle that has been "straightened out." It is a little more than three diameters in length: The number pi Pi is an irrational number. |vyp| sjy| zny| yen| las| wtk| hhq| btj| jgo| pey| igo| oub| vzk| szg| lkx| edm| qgc| ipj| ipk| yfp| wht| tit| dqw| rke| dum| blg| wbq| afm| gvk| cai| spv| pqv| ufa| eab| ftc| gdi| xzj| mgg| xov| inz| nyf| jhz| bzk| yys| eig| kqm| sng| zgn| xmf| cra|