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This video will give you the first two basic trigonometric derivatives. These are the derivatives of sine and cosine. Watch early on how these two derivatives actually connect to one another by taking derivatives. For more videos please visit http://www.mysecretmathtutor.com

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Leave a tip for good service: https://paypal.me/jjthetutor A point charge is placed at each corner of a square with side length a. The charges all have the same magnitude q. Two of the charges are positive and two are negative, as shown in What is the direction of the net electric field at the center…

Reading exercise for Physics I Mechanics