What is the value of arctan(tan((11pi)/9)) ?

The value of arctan(tan((11pi)/9)) is (2pi)/9

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

arctan(tan((11pi)/9))

arctan (tan (\frac{11 π}{9}))

\frac{2 π}{9}

Solution steps

arctan (tan (\frac{11 π}{9}))

Use the inverse trig property:

\frac{2 π}{9}

= \frac{2 π}{9}

- 2 sin (\frac{3 π}{2})

sin (5)

- 4 cos (\frac{π}{3}) (1 + ln (7 sin (\frac{π}{3})))

\frac{tan ( 4 0 ^{\circ} ) + tan ( 2 0 ^{\circ} )}{1 - tan ( 4 0 ^{\circ} ) tan ( 2 0 ^{\circ} )}

4 \cdot tan (6 0^{\circ})

What is the value of arctan(tan((11pi)/9)) ?
The value of arctan(tan((11pi)/9)) is (2pi)/9