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Verify Trigonometric Equations
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Re: Verify Trigonometric Equations
by Eigenvalue » Tue Aug 25, 2026 5:54 pm
cos60°=[tex]\frac{1}{2}[/tex]
[tex]\sqrt{(1-cos60°)/2}[/tex]
=[tex]\sqrt{(1-0.5)/2}[/tex]
=[tex]\sqrt{1/4}[/tex]
=[tex]\frac{1}{2}[/tex]
=sin30°
[tex]\sqrt{(1+cos60°)/2}[/tex]
=[tex]\frac{1+0.5}{2}[/tex]
=[tex]\sqrt{3/4}[/tex]
=[tex]\frac{√3}{2}[/tex]
=cos30°
[tex]\sqrt{(1-cos60°)/2}[/tex]
=[tex]\sqrt{(1-0.5)/2}[/tex]
=[tex]\sqrt{1/4}[/tex]
=[tex]\frac{1}{2}[/tex]
=sin30°
[tex]\sqrt{(1+cos60°)/2}[/tex]
=[tex]\frac{1+0.5}{2}[/tex]
=[tex]\sqrt{3/4}[/tex]
=[tex]\frac{√3}{2}[/tex]
=cos30°
- Eigenvalue
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Re: Verify Trigonometric Equations
by nycmath » Tue Aug 25, 2026 8:25 pm
Eigenvalue wrote:cos60°=[tex]\frac{1}{2}[/tex]
[tex]\sqrt{(1-cos60°)/2}[/tex]
=[tex]\sqrt{(1-0.5)/2}[/tex]
=[tex]\sqrt{1/4}[/tex]
=[tex]\frac{1}{2}[/tex]
=sin30°
[tex]\sqrt{(1+cos60°)/2}[/tex]
=[tex]\frac{1+0.5}{2}[/tex]
=[tex]\sqrt{3/4}[/tex]
=[tex]\frac{√3}{2}[/tex]
=cos30°
Wow! You really know your mathematics.
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