What is the value of cos(pi/4)+cos(pi/6) ?

The value of cos(pi/4)+cos(pi/6) is (sqrt(2)+sqrt(3))/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

cos (\frac{π}{4}) + cos (\frac{π}{6})

\frac{2 + 3}{2}

Solution steps

cos (\frac{π}{4}) + cos (\frac{π}{6})

Use the following trivial identity:

cos (\frac{π}{4}) = \frac{2}{2}

Use the following trivial identity:

cos (\frac{π}{6}) = \frac{3}{2}

= \frac{2}{2} + \frac{3}{2}

Simplify

\frac{2}{2} + \frac{3}{2} : \frac{2 + 3}{2}

= \frac{2 + 3}{2}

20 sin (3 0^{\circ})

tan (- 48 0^{\circ})

arctan (0.3)

cos (arcsin (- \frac{1}{3}))

tan (arccos (\frac{3}{4}))

What is the value of cos(pi/4)+cos(pi/6) ?
The value of cos(pi/4)+cos(pi/6) is (sqrt(2)+sqrt(3))/2