Help Please Solving Trigonometry Quiz
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Help Please Solving Trigonometry Quiz

[From: ] [author: ] [Date: 12-05-27] [Hit: ]
......
simplify 1-sin^2 theta/sin 2 theta

simplify cosAcosb - sinA-sinB where A=pie/2 - b

simplify. cos 2 theta - 1 / 2 sin theta

help would be appreciated a lot, since im writing quiz and it ends in 15 mins

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1. ( 1-sin^2(θ) ) / sin(2θ) = cot(θ)/2

2. cos((π/2)-b)cos(b) - sin((π/2)-b)sin(b) = cos(π/2)

3. cos(2θ) - sin(θ)/2 = 1-sin(θ)(2sin(θ) + (1/2))
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