2018年1月10日 · If 60 degree angle is the "lone angle", then the other two angles are congruent. Therefore, 2theta+60=180 2theta=120 theta=60 which means that all of its sides are congruent to each other. Second, the 60 degree angle may have its "twin" in the triangle. See below. If 60 degree angle has its "twin", in the triangle, then the equation will look ...

2015年8月27日 · sin(60^@) = sqrt(3)/2color(white)("XX")csc(60^@) = 2/sqrt(3) cos(60^@) = 1/2color(white)("XXXX")sec(60^@) = 2 tan(60^@) = sqrt(3)color(white)("XXX")cot(60^@)=1/sqrt(3) Use the basic trigonometric definitions and the diagram below. Note: only the left half triangle is directly relevant; both sides combine to form …

2016年8月26日 · Bisecting angles twice will give an angle of 75°. Note that 150° div 2 = 75° Construct an equilateral triangle using a compass. Each of the angles is 60°. Extend the base. Now bisect the angle of 60° to create an angle of 30° inside the triangle. THe adjacent supplementary angle will be 150°, Bisecting the angle of 150° will give the required angle of 75°.

2015年6月25日 · The trigonometric ratios for 30^o, 45^o, and 60^o are based on some standard triangles. sin, cos, and tan (and their reciprocals) are the ratios of the sides of these triangles. Both 30^o and 60^o are based on an equilateral triangle with sides of length 2 and with one of the angles bisected. The 45^o angle is based on an isosceles triangle with the equal sides having …

2018年5月1日 · The short leg is (10sqrt3)/3, the hypotenuse is (20sqrt3)/3 The 30.60.90 law states that for any given right triangle with angles measuring 30 and 60 degrees: The 30 degree angle's opposite side is x The 60 degree angle's opposite side is xsqrt3 The 90 degree angle's opposite side is 2x The "long leg" must be the 60 degree angle, so it is xsqrt3, or 10. The short …

2017年7月23日 · The foot of the ladder is 10 feet away from the base of the wall. Here , the wall , top and foot of the ladder and ground makes a right triangle of which length of ladder h=20 is regarded as hypotenuse, angle with ground is theta = 60^0 ; cos theta =b/h or cos 60 = b/20 or b = 20 * cos 60 = 20 * 1/2 = 10 feet. The foot of the ladder is 10 feet away from the base of the …

2018年2月16日 · Add +360 degrees until you have a positive angle, then sketch. The reference angle is the angle from the sketch to the x-axis, in this case, 60 degrees. It makes sense here to state the angle in terms of its positive coterminal angle. To find this, add a positive rotation (360 degrees) until you get a positive angle. -240+360=120 Since 120 is positive, you can stop …

2016年7月31日 · How do you find two unit vectors that make an angle of 60° with v = ‹3, 4›? ...

Opposite refers to the side which is not part of the angle, adjacent refers to the side that is part of the angle, and the hypotenuse is the side opposite the right angle, which is #C# in the image above. For example,lets say you know the length of #a# and the …

2015年11月8日 · An acute scalene triangle. The third angle is 75^@ since the sum of the angles must be 180^@ All three sides of the triangle are of different lengths. All of its angles are less than right angles (90^@)