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Popular >

cos((6pi)/7)

Solution

cos (\frac{6 π}{7})

Solution

- 0.90096 \dots

Solution steps

cos (\frac{6 π}{7})

Refine to a decimal form

= - 0.90096 \dots

Popular Examples

arccos(1/(sqrt(35)))

arccos (\frac{1}{35})

e^{2 s i n (0)}

(sin(16)*352)/(sin(52))

\frac{sin ( 1 6 ^{\circ} ) \cdot 352}{sin ( 5 2 ^{\circ} )}

sin(arctan(5/33))

sin (arctan (\frac{5}{33}))

cos((2pi)/7)+cos((4pi)/7)+cos((6pi)/7)

cos (\frac{2 π}{7}) + cos (\frac{4 π}{7}) + cos (\frac{6 π}{7})

Frequently Asked Questions (FAQ)

What is the value of cos((6pi)/7) ?
The value of cos((6pi)/7) is -0.90096…