Teaching expedient to study the features of the main trigonomtetric functions makes easy for pupils to study estimation of the value of the trigonometric functions on the trigonometric circle and the characteristics thereof. Those characteristics are determined, with accuracy of one hundreds, on the trigonometrical circle (8) of plate (1) joined with axis (5) with transparent ruler (3) along which the transparent slider/guide (4). For example cos44° is determined by means of ruler (2) rotating and adjusting its vertical T-square axis 00' to the pitch scale 44° of the circle (9). Upon the angle adjustment at 44° with starting angle leg by semi-straight line OX with ending leg of semi-straight line OO' and the cross-section at the top O ruler (3) rotates with straight line O'O", and misses the transparent slider (3) until its straight EF, horisontal on the straight line O'O", is not set on the AB side of the square ABCD. not to set the side of AB square ABCD. Then straight line O'O" cuts the radius of the trigonometric circle at the X axle along the pitch scale number 0,72 and thus cos 44° is 0,72.;Nastavno sredstvo za prouavanje osobina osnovnih trigonometrijskih funkcija, olakava uenicima uenje odredjivanje vrednosti trigonometrijskih funkcija na trigonometrijskom krugu i njihovih osobina. Te vrednosti odredjuju se, sa tanou od jedne stote, na trigonometrijskom krugu (8) ploe (1) spojene osovinom (5) sa providnim lenjirom (2) koji je osovinom (6) spojen sa providnim lenjirom (3) po kome se pomera providni kliza (4). Na primer cos 44В° odredjuje se obrtanjem lenjira (2) i postavljanjem njegove prave 00' na podeljak od 44В° kruga (9). Nakon izbora ugla od 44В° sa poetnim krakom polupravom OX zavrnim krakom polupravom 00* i temenom 0 obre se lenjir (3) sa pravom 0'0", i pomera kliza (4) dok se njegova du EF, normalna na pravom 0'0", ne postavi na stranicu AB kvadrata ABCD. Tada prava 0'0" see polurpenik trigonometrijskog kruga na X-osi po podeljku broja 0,72 pa je cos44В°=0,72.[Teaching expedient to study the features of the main trigonomtetric functions makes easy for pupils to study estimation of the value of the trigonometric functions on the trigonometric circle and the characteristics thereof. Those characteristics are determined, with accuracy of one hundreds, on the trigonometrical circle (8) of plate (1) joined with axis (5) with transparent ruler (3) along which the transparent slider/guide (4). For example cos44В° is determined by means of ruler (2) rotating and adjusting its vertical T-square axis 00' to the pitch scale 44В° of the circle (9). Upon the angle adjustment at 44В° with starting angle leg by semi-straight line OX with ending leg of semi-straight line OO' and the cross-section at the top O ruler (3) rotates with straight line O'O", and misses the transparent slider (3) until its straight EF, horisontal on the straight line O'O", is not set on the AB side of the square ABCD. not to set the side of AB square ABCD. Then straight line O'O" cuts the radius of the trigonometric circle at the X axle along the pitch scale number 0,72 and thus cos 44В° is 0,72.
展开▼
机译：便于研究主要三角函数的特征的教学使学生易于研究对三角圆的三角函数的值及其特性的估计。这些特征以一百个精度在板（1）的三角形圆（8）上确定，该三角形圆与轴（5）相连，并带有透明标尺（3），透明滑块/导向器（4）沿着该标尺。例如，cos44°借助于标尺（2）旋转并调节其垂直的T形轴00'至圆（9）的螺距刻度44°来确定。在通过半直线OX以起始直线腿和以半直线OO'的结束腿以及起始O直尺（3）的横截面的起始角腿将角度调整为44°时，直线O'O“旋转，并且错过透明滑块（3），直到其直线EF（水平O'O“上的水平）未设置在正方形ABCD的AB侧上。不要将AB方的ABCD设置为侧面。然后，直线O'O“沿节距刻度数0,72切掉X轴上的三角圆的半径，因此cos 44°为0.72。; Nastavno sredstvo za prouavanje osobina osnovnih trigonometrijskih funkcija，olakava uenicima uenje odredjivanje vrednosti trigonometrijskih funkcija na trigonometrijskom krugu i njihovih osobina。Te vrednosti odredjuju se，sa tanou od jedne stote，na trigonometrijskom krugu（8）ploe（1）spojene osovinom（5）sa providnim（6） providnim lenjirom（3）popomése pomera providni kliza（4）。Na引物cos44В°odredjuje se obrtanjem lenjira（2）在postavljanjem njegove prave 00'na podeljak od44В°kruga（9）。Nakon izbora sauglaod poetnim krakom polupravom OX zavrnim krakom polupravom 00 *我的名字是0 obre se lenjir（3）sa pravom 0'0“，i pomera kliza（4）的名字是EF，normalna na pravom 0'0”，是邮编kvadrataABCD。Tadaprava 0'0“参见polurpenik trigonometrijskog kruga na X-osi po po deljku broja 0,72 pa jecos44В°= 0,72。[学习权宜之计，研究主要三角函数的特征使学生更容易研究对三角圆上的三角函数的值及其特性的估计。这些特征以一百个精度在板（1）的三角形圆（8）上确定，该三角形圆与轴（5）相连，并带有透明标尺（3），透明滑块/导向器（4）沿着该标尺。例如，cos44？°是通过标尺（2）旋转并将其垂直T形轴00'调整为圆（9）的螺距刻度44°来确定的。在通过半直线OX从起始角脚开始，以半直线OO'的结束脚和在顶部O形标尺（3）处的横截面以44°°的角度旋转时，直线O'O“旋转，并且错过透明滑块（3），直到其直线EF（水平O'O“上的水平）未设置在正方形ABCD的AB侧上。不要将AB方的ABCD设置为侧面。然后，直线O'O“沿节距刻度数0,72切割X轴处的三角圆的半径，因此cos 44°为0.72。
展开▼
