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3:58
YouTube
Salvation-Cals
How to Calculate Sin, Cos & Tan Without a Calculator (EASY Method)
Learn how to calculate sine, cosine, and tangent of various angles without using a calculator! In this tutorial, I’ll walk you through simple tricks and memory aids to find trig values like sin30°, tan60°, and more—all by hand. This method is great for: Math exams WAEC, NECO, JAMB prep Students without calculators Building stronger ...
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