6 - Find the exact value of the expression. Rep:? Trigonometry - Trig. Favourite answer. In order to work out sin 60, use AC as the hypotenuse and AB as the opposite side. First find (cos 15). cos(60°) = 1/2 The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) = 1/2. The exact value of sine of angle sixty degrees in fraction form is the quotient of square root of three by two, and it is written in below mathematical form in trigonometry. please help with these two problems and explain how their done thanks. A concise two-deep answer would be preferred, and other simplifications are also welcomed. Call cos 15 = cos x Apply the trig identity: cos 2x = 2cos^2 x - 1. cos 2x = cos (30) = sqrt3/2 = 2cos^2 x - 1 2cos^2 x = 1 + sqrt3/2 = (2 + sqrt3)/2 cos^2 x = (2 + sqrt3)/4 cos x = cos 15 = (sqrt(2 + sqrt3)/2. value The value of cos of angle 30 degrees is equal to √32 in fraction form exactly. 240 degrees is in the third quadrant, where the sin of the angle is negative. For example, sine (18° - 15°) will give us the sine of 3 degrees. Sin and Cos of 3°, 21°, 33°, 39°, 51°, 57°, 69°, and 87° each have two answers. We can find the value of cos 60. \sin 60^{\circ} Give the gift of Numerade. find the exact value of: sin 60 degrees-cos 60 degrees exact value (A) csc 60 degrees ()cos 150 degrees (C)tan 300degrees (D)sec 300degrees (E)sin - Answered by a verified Math Tutor or Teacher We use cookies to give you the best possible experience on our website. sin1(3/2) Ch. The trigonometric functions also called as an angle function relates the angles of a triangle to the length of its sides. These values can be determined geometrically using three useful right triangles. Before we can find the sine and cosine, we need to build our 30-60-90 degrees triangle. By signing up, you'll get thousands of step-by-step solutions to your homework questions. Using the 30-60-90 triangle to find sine and cosine. Scroll down the page for more examples and solutions on the trigonometric ratios. WK of Angmar. Relevance. But you'll have to take into consideration that 240 is in the 3rd quadrant; thus, sin(240) = -sin(60) = … In 3-44, find the exact value. I will upload a picture shortly to explain in more detail.. find the exact value of sin 105 degrees? Lv 6. Answer: Submit Answer undefined attemp State the exact value of sin 30degrees? ... 30 45 60. sin 1/2 sqrt(2)/2 sqrt(3)/2. What is the exact value of sin 60 degrees? show steps please. 1. Sin 45 Degrees. Answers are included (and corrected from the earlier version). 17pi/12 = 7pi/6 + pi/4 My ans: (sqrt2 - sqrt6)/4 . Lv 6. sin 3°: The above leads you to one of the paths to sine of 3 degrees and to sine of 6 degrees. $\sin{(60^°)} \,=\, \dfrac{\sqrt{3}}{2}$ The value of sine sixty degrees is an irrational number and its value is written in decimal form as follows. Start with an equilateral triangle with a side length of 4 like the one you see below. In the reference triangle with 60 centered at origin against the positive x-axis, the side opposite 60 is s*sqrt(3), the side opposite 30 is s, and the hypotenuse is 2s. Sin of 60 degrees is . tansin125 Ch. The value of sin of angle $45$ degrees is considered as $0.7071$ approximately in mathematics. 6) find each trig. angle BAC = 30 degrees for the same reason. A worksheet of non-calculator trigonometry questions which practise the use of the exact values for sin, cos and tan of 0, 30, 45, 60 and 90 degrees. 6 - Rewrite … Work on these values until you know them all!

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