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Why Is Cos Negative? [Solved]
As the angle increases from 90° to 180°, the sine decreases from its maximum value of 1 to a value of 0. As the angle increases from 90° to 180°, the cosine increases in magnitude, but is now a negative value. The cosine goes from 0 to -1. Again you have an angle of 0° and a side with length 0.
Math Class 11th Lecture 12 Why Cos of negative angle is positive Tehseen Younas Superior Toba
Math Class 11th Lecture 12 Why
Trigonometry - Negative angle identities
If you have a
why sine minus theta is minus sine theta || proof of negative angle trignometric identity ||
in this video sajid sir give proof of all
