Finding Cosine Using Calculator

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Just today I got confused with an activity from my school and this would have saved me a 15 min struggle, thanks for yor teaching

insertnameheree
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Man teaching elementary school trigo with ease, love your videos. Right now I'm in class 11, from India, a science student.... Preparing for JEE. Wish me luck sir😊

aguywithwhiskers
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I love my kids …I didn’t like numbers but I trained them y become science junkies y tekkies 😂

startreker
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Sir your chalk pen is awesome where can I buy

MdAman-qbwp
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Professor do you take any calculus classes? if yes please let me know

guy_with_infinite_power
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Professor, how we do we know that we should do (360-theta) but not (270+theta) because the 4th quadrant supports both (270+theta) and (360-theta)… Should we check with calculator or is there a logic behind it? It would be very helpful! 😊😊😊

rubyk
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Wait, what mean the .43? And Why the cos^-1?

lorkg
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Couldn't you interpolate values of cosine less than 1, or use series? We wouldn't have to use calculators😮.

Ray-qbtk