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10 Nov 2019
Find the values of theta in degrees (0 degree
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Patrina Schowalter
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13 Mar 2019
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Determine sin2 theta, cos2 theta, and tan 2 theta and the quadrant in which 2 theta lies, given the information below. tan theta = 3/4 and 0 is in Quadrant III. sin2 theta = cos2 theta = tan2 theta = Choose the quadrant in which 2 theta is located. a. I B. Ill C. IV
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Question 1. Neatly derive the trig identities for cos (u+v) and sin (u+v) using Euler?s Formula: e^i theta= cos theta + i sin theta put derivative here: Question 2. Neatly derive the trig identity cos^2 a = 1+cos (2a)/2 using the sum formula cos (a+b) with b = a. Put derivation here: Question 3. Find sin pi/12 exactly using the appropriate trig identity , using pi/12=pi/3-pi/4, and using values from the table of sines and cosines . Don?t use calculator ! it is OK if there are square roots in your answer. Answer and Work: Question 4. If cos 2 u = root 5/10 find cos^2 u. Do not use your calculator , it is OK to leave square roots in your answer. Answer and Work:
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