What is the value of sin^2(0.5)-cos(0.5)+0.5 ?

The value of sin^2(0.5)-cos(0.5)+0.5 is -0.14773…

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sin^2(0.5)-cos(0.5)+0.5

sin^{2} (0.5) - cos (0.5) + 0.5

- 0.14773 \dots

Solution steps

sin^{2} (0.5) - cos (0.5) + 0.5

Refine to a decimal form

= - 0.14773 \dots

120 sin (2 5^{\circ})

sin (\frac{π}{5}) cos (\frac{π}{20}) + cos (\frac{π}{5}) sin (\frac{π}{20})

sin (0) + 1

\frac{tan ( 19 0 ^{\circ} ) - tan ( 1 0 ^{\circ} )}{1 + tan ( 19 0 ^{\circ} ) tan ( 1 0 ^{\circ} )}

310 tan (4 1^{\circ})

What is the value of sin^2(0.5)-cos(0.5)+0.5 ?
The value of sin^2(0.5)-cos(0.5)+0.5 is -0.14773…