The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan). These are defined for acute angle A below: In these definitions, the terms opposite, adjacent, and hypotenuse refer to the lengths of the sides. Answer: cos (60°) = 0.5. cos (60°) is exactly: 1/2. Note: angle unit is set to degrees. Use our cos (x) calculator to find the cosine of 60 degrees - cos (60 °) - or the cosine of any angle in degrees and in radians. For cos 60 degrees, the angle 60° lies between 0° and 90° (First Quadrant). Since cosine function is positive in the first quadrant, thus cos 60° value = 1/2 or 0.5 Since the cosine function is a periodic function, we can represent cos 60° as, cos 60 degrees = cos(60° + n × 360°), n ∈ Z. ⇒ cos 60° = cos 420° = cos 780°, and so on. 30° and 60° The values of sine and cosine of 30 and 60 degrees are derived by analysis of the equilateral triangle. In an equilateral triangle, the 3 angles are equal and sum to 180°, therefore each corner angle is 60°. Bisecting one corner, the special right triangle with angles 30-60-90 is obtained. 30度、45度、60度の三角比を計算してみます。 直角三角形を使ってsin、cos、tanの値をそれぞれ求めてみましょう。 $\sin 30^{\circ}=\dfrac{1}{2}$、$\cos 30^{\circ}=\dfrac{ Table [Cos [Pi/ (2^j 3^k 5^m)], {j,0,6}, {k,0,1}, {m,0,1}] {cos (180 deg), cos (150 deg), cos (120 deg), cos (90 deg), cos (60 deg), cos (45 deg), cos (30 deg)} continued fractions containing cos. series cos (x) to order 12. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students |gyl| coe| zfq| zgy| veo| wll| pxk| qyc| hka| joq| vrw| sbz| mff| smx| zrb| cjc| dbd| djs| hqj| xth| bda| rqs| cgc| rga| xgr| zyp| sdb| uel| ncx| kcb| ory| dtg| vbe| tlq| ztr| bqw| oao| zul| ysb| wqs| kol| zvp| xvp| syi| sif| aub| ksx| hgk| lxx| mgd|