Use the Theorem of Pythagoras to solve the right triangle whose legs are 1 and x, and the hypotenuse is 2. Now, since the angle at the top, which was 60 degrees was cut in half by the perpendicular line, that means that this angle in the right triangle is 30 degrees. Remember that .

Question 206815 This question is from textbook Longman Mathematics for IGCSE book 1 : Draw an equilateral triangle and bisect it. Prove that the exact value of the tangent ratios of 30 degree, 45 degree and 60 degree are 0.577, 1,and 1.73, respectively. Please solve this question. It is from the chapter of trigonometry:Tangent ratios.Thank you very much indeed! This question is …

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 a length of 1. For all ...

2018年6月4日 · In a equilateral triangle, all sides are equal to 1. Then all angles are 60º Consider the height of this triangle. So we have an right triangle with sides 1/2, 1 and h=height. The angles are 90, 60 and 30 Lets calculate the height by Pitogorean theorem (1 2)2 +h2 = 11, then h = √3 2 Then sin30 = 1 2 1 = 1 2 cos30 = √3 2 tan30 = 1 2 √3 2 = 1 √3 = √3 3

2016年5月8日 · How do you evaluate tan 30° without using a calculator by using ratios in a reference triangle?

2015年5月15日 · Assuming your "30" is 30 degrees: cot = adjacent opposite cot(30o) = √3

How do you evaluate the sine, cosine, and tangent of the angle 30 degrees without using a calculator?

: Draw an equilateral triangle and bisect it. Prove that the exact value of the tangent ratios oif 30 degree, 45 degree, and 60 degree are 0.577, 1, and 1.73 respectively.

How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle 112^circ 30'?

Question 249327: what is the exact value od tangent 75 Degrees?