sin-pi-14-sin-3pi-14-sin-5pi-15-

Question Number 84913 by M±th+et£s last updated on 17/Mar/20

$$ \\ $$$${sin}\frac{\pi}{\mathrm{14}}\:{sin}\frac{\mathrm{3}\pi}{\mathrm{14}}\:{sin}\frac{\mathrm{5}\pi}{\mathrm{15}}=? \\ $$

Commented by jagoll last updated on 17/Mar/20

$$\mathrm{sin}\:\frac{\pi}{\mathrm{14}}\mathrm{sin}\:\frac{\mathrm{3}\pi}{\mathrm{14}}\mathrm{sin}\:\frac{\mathrm{5}\pi}{\mathrm{14}}\:?\:\mathrm{or}\:\mathrm{not} \\ $$

Commented by M±th+et£s last updated on 17/Mar/20

$${yes}\:\mathrm{15}\:{is}\:{typo} \\ $$

Answered by john santu last updated on 17/Mar/20

$$\frac{\mathrm{1}}{\mathrm{8}} \\ $$

Commented by jagoll last updated on 17/Mar/20

$$\mathrm{yes}\:\mathrm{sir} \\ $$

Commented by M±th+et£s last updated on 17/Mar/20

$${yes}\:{sir} \\ $$

Answered by jagoll last updated on 17/Mar/20

Commented by john santu last updated on 17/Mar/20

$$\mathrm{greatt} \\ $$

Commented by M±th+et£s last updated on 17/Mar/20

$${thank}\:{you} \\ $$

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