Confused on what should be negative when finding with half angle identities
By A Mystery Man Writer
Description
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I am trying to find the work done by gravity for the mass sliding up an inclined plane. I am confused why I don't include the y component of gravity (mgcostheta) in
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Use the half-angle identities to find the exact value of eac
![Confused on what should be negative when finding with half angle identities](https://i.ytimg.com/vi/vEU25NlpaXA/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLDQJxCuXaBtwY-1uvhFnvo4EtPWtg)
Half Angle Formulas & Identities - Evaluating Trigonometric Expressions
Is it possible that the value of sin is negative in a half angle formula? - Quora
![Confused on what should be negative when finding with half angle identities](https://study.com/cimages/multimages/16/cosine_double_angle_example722126251990471103.png)
Double Angle Formula, Sin, Cos & Tan - Lesson
![Confused on what should be negative when finding with half angle identities](https://image.slideserve.com/1196148/use-a-half-angle-identity-to-find-the-exact-value-of2-l.jpg)
PPT - Double-Angle and Half-Angle Identities PowerPoint Presentation, free download - ID:1196148
![Confused on what should be negative when finding with half angle identities](https://study.com/cimages/multimages/16/fquad4.png)
Half Angle Formula, Quadrant Rule & Examples
![Confused on what should be negative when finding with half angle identities](https://i.ytimg.com/vi/SYO5bKLS0YE/mqdefault.jpg)
Half Angle Formula Positive or Negative?
![Confused on what should be negative when finding with half angle identities](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3252/2018/07/19144034/CNX_Precalc_Figure_07_03_002.jpg)
Double-Angle, Half-Angle, and Reduction Formulas
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