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Why Is Sinx Negative? [Solved]
Answer(s) in the third quadrant,as x increases from pie to 3pie/2(180 degree to 270 degree),sin x decreases from 0 to -1 hence sin x is negative in 3rd quadrant
.. In third quadrant P is -ve and H is always positive. So that is why it is negative in third quadrant.
why sine minus theta is minus sine theta || proof of negative angle trignometric identity ||
in this video sajid sir give proof of all
Derivative of sin(x) and cos(x), PROOF
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Sinus- und Cosinusfunktionen verändern
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