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Question 4 Not yet answered Double-angle identities Points out of 3.00 sin 20=2singcose cos20 =cos20-sin20 P Flag cos20 =2cos20-1 question cos20=1-2sin20 tan 20_ _2tano 1-tan-0

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Question 4 Not yet answered Double-angle identities Points out of 3.00 sin 20=2singcose cos20 =cos20-sin20 P Flag cos20 =2cos20-1 question cos20=1-2sin20 tan 20_ _2tano 1-tan-0 Use the given conditions to find the exact value of sin(2u), cos(zu) and tan(2u) using the double-angle formulas above. Draw a triangle representing this scenario as well. Let sin(u) = -3/5 where 31/2

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