PrecalcCast: Tangent Half and Double Angle Formula
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9:25
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Using the Sum/Difference/Double/Half angle formulasby oscarlevin414 views
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Solving Trigonometric Equations: Half-Angles Part 1by ged1182415 views
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PrecalcCast: Solving a Triangleby elmacdork181 views
Thank u. U taught me this in 4 mins when my math teacher couldn't do it in a week incredible...
JustLiving305 3 months ago
WOW,awsome! cool
navhap 1 year ago
Oh my!! U have no idea how I feel after watching your videos. Before I watched them, I was a bit confused on how to solve, sine, cosine and tan half and/or double angle problems. Seriously, not sure why, but it took me a little while to get the concepts down. After watching your videos that fear of running across these type of problems went away. Seriously...it did!!!!! Thank you soooooo much for posting these videos and the great job!!!!!
jesusclau1 1 year ago
Thanks!
catrin2020 2 years ago