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Hmmm, I haven't thought of that. Let me think about it :)
The set is based on what I've learned/know. Glad to help :D
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Ya 'cause then there is a chance that there will be 2016 problems in this set.
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Well, it is already 5% complete (LOL). I think you're on Slack; are you?
tan θ ⋅ sin θ + cos θ = cos θ sin θ ⋅ sin θ + cos θ = cos θ sin 2 θ + cos θ = cos θ sin 2 θ + cos 2 θ = cos θ 1 [ sin 2 θ + cos 2 θ = 1 ] = sec θ
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I really like this set. It's completely based on what we did in our 8th grade. By the way , can others contribute problems to this set?