- #1
foo9008
- 676
- 4
Homework Statement
is the circled part wrong ?
Homework Equations
The Attempt at a Solution
how could 0.5 sin2theta = ( 1 + cos2theta ) / 2 ?
Trigonometric equation for stress
- Thread starter foo9008
- Start date
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SUMMARY
The discussion centers on the trigonometric identity involving the equation 0.5 sin(2θ) = (1 + cos(2θ)) / 2. This identity is confirmed as correct and is derived from the Half-Angle formulas in trigonometry. Participants emphasize the importance of understanding these identities for solving related mathematical problems. The reference to the Wikipedia page on trigonometric identities provides additional context and resources for further study.
PREREQUISITES- Understanding of trigonometric identities
- Familiarity with Half-Angle formulas
- Basic knowledge of sine and cosine functions
- Ability to manipulate algebraic equations
- Study the derivation of Half-Angle formulas in trigonometry
- Explore additional trigonometric identities on Wikipedia
- Practice solving equations using trigonometric identities
- Learn about the applications of trigonometric identities in physics and engineering
Students studying trigonometry, mathematics educators, and anyone needing to apply trigonometric identities in problem-solving contexts.
is the circled part wrong ?
how could 0.5 sin2theta = ( 1 + cos2theta ) / 2 ?
- #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
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It's a trig identity. Look up "Half-Angle" formulas:foo9008 said:Homework Statement
is the circled part wrong ?
Homework Equations
The Attempt at a Solution
how could 0.5 sin2theta = ( 1 + cos2theta ) / 2 ?
https://en.wikipedia.org/wiki/List_of_trigonometric_identities
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