Using half angle formulas to solve trigonometric equations

👉 Learn how to solve equations using half-angle identities. To do this we will replace every trig function with half angles using the identity. Then we will simplify and solve trigonometric functions. To find the values we will use the unit circle or calculator.

Timestamps:
0:00 Intro
0:34 Start of Problem

Corrections:
8:09 cos x=1 is at (1, 0). I accidentally wrote the ordered pair as (0, 1).

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Organized Videos:
✅ Half Angle Formulas
   • Half Angle Formulas  
✅ Evaluate Half Angle Formulas of and Angle
   • Evaluate Half Angle Formulas of and A...  
✅ Evaluate Half Angle Formulas from a triangle
   • Evaluate Half Angle Formulas from a t...  
✅ Write the Expression as a single function | Half Angle Formulas
   • Write the Expression as a single func...  
✅ Solve Equations using Half Angle Formulas
   • Solve Equations using Half Angle Form...  

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