What is the value of 20.9+((sin(pi/(21)+e/(21))*0.19*sqrt(21))-0.21+1) ?

The value of 20.9+((sin(pi/(21)+e/(21))*0.19*sqrt(21))-0.21+1) is 21.92981…

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20.9+((sin(pi/(21)+e/(21))0.19sqrt(21))-0.21+1)

20.9 + ((sin (\frac{π}{21} + \frac{e}{21}) \cdot 0.19 \cdot 21) - 0.21 + 1)

21.92981 \dots

Solution steps

20.9 + ((sin (\frac{π}{21} + \frac{e}{21}) \cdot 0.19 21) - 0.21 + 1)

Refine to a decimal form

= 21.92981 \dots

\frac{sin ( 15 0 ^{\circ} ) + sin ( 3 0 ^{\circ} )}{cos ( 12 0 ^{\circ} ) + cos ( 24 0 ^{\circ} )}

- 6 sin (3 0^{\circ}) + 2 cos (6 0^{\circ})

arcsin (\frac{9.2}{15.6})

arccos (0.371)

arccos (sin (- \frac{11 π}{4}))

What is the value of 20.9+((sin(pi/(21)+e/(21))*0.19*sqrt(21))-0.21+1) ?
The value of 20.9+((sin(pi/(21)+e/(21))*0.19*sqrt(21))-0.21+1) is 21.92981…