What is the value of 9sin(pi/4)+9cos(pi/4) ?

The value of 9sin(pi/4)+9cos(pi/4) is 9sqrt(2)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

9sin(pi/4)+9cos(pi/4)

9 sin (\frac{π}{4}) + 9 cos (\frac{π}{4})

92

Solution steps

9 sin (\frac{π}{4}) + 9 cos (\frac{π}{4})

Use the following trivial identity:

sin (\frac{π}{4}) = \frac{2}{2}

Use the following trivial identity:

cos (\frac{π}{4}) = \frac{2}{2}

= 9 \cdot \frac{2}{2} + 9 \cdot \frac{2}{2}

Simplify

9 \cdot \frac{2}{2} + 9 \cdot \frac{2}{2} : 92

= 92

arccos (\frac{3}{14})

cos (2 (\frac{π}{4}))

arctan (\frac{5}{- 3})

sin (\frac{π}{2}) + cos (\frac{π}{2})

tan (\frac{9 π}{8})

What is the value of 9sin(pi/4)+9cos(pi/4) ?
The value of 9sin(pi/4)+9cos(pi/4) is 9sqrt(2)