WebApr 8, 2024 · Transcribed Image Text: Use a double-angle formula to find the exact value of the given expression. 2 cos ²15⁰-1 2 cos 215⁰-1 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) -1=. WebDec 26, 2024 · Use an Addition or Subtraction Formula to find the exact value of the expression. a)tan 255° trignometric-addition trignometric-subtraction asked Dec 26, 2024 in TRIGONOMETRY by anonymous Share this question 1 Answer 0 votes tan 255 = tan (180 + 75) = tan (75) = tan (45 + 30) = [ tan (45) + tan (30) ] / [ 1 - tan (45) tan (30) ]
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WebThe half-angle identity calculator is an online tool devised to find the value of half-angle using the value of the full angle. Users can choose between different units of angles. What is the half-angle? Half-angle is a term widely used in trigonometric calculations and it refers to the half of an angle. They are represented as: Sin (θ /2) Cos ... WebJun 14, 2015 · 2. A complex bind of infection-triggered autoimmune phenomena and inflammation. ADEM mainly affects children under 10 years, is more common in males , , , , and mostly arises 2 to 40 days after an infection or more rarely after vaccines , , .In most cases ADEM follows a trivial infection, usually localized in the upper respiratory tract, … health and safety webinars nz
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WebOct 27, 2024 · Step-by-step explanation: Suppose we wanted to find the exact value of tan (255°). We cannot find this value because it is not a special angle, or can we? Since 255° is the sum of two special angles on a unit circle, it can be done. 255° can be expressed as 225° + 30°, which means we can use the sum formula to evaluate it. WebFree online tangent calculator. tan(x) calculator. RapidTables. Search Share. Home ... Webtan (255) tan ( 255) Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. tan(75) tan ( 75) Split 75 75 into two angles where the values of the six trigonometric functions are known. tan(30+45) tan ( 30 + 45) Apply the sum of … health and safety webinars