What is the value of sin((3*pi)/2) ?

The value of sin((3*pi)/2) is -1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

sin((3*pi)/2)

sin (\frac{3 \cdot π}{2})

- 1

Solution steps

sin (\frac{3 π}{2})

Rewrite using trig identities:

sin (π) cos (\frac{π}{2}) + cos (π) sin (\frac{π}{2})

= sin (π) cos (\frac{π}{2}) + cos (π) sin (\frac{π}{2})

Use the following trivial identity:

sin (π) = 0

Use the following trivial identity:

cos (\frac{π}{2}) = 0

Use the following trivial identity:

cos (π) = (- 1)

Use the following trivial identity:

sin (\frac{π}{2}) = 1

= 0 \cdot 0 + (- 1) \cdot 1

Simplify

= - 1

arccos (\frac{5}{41})

18 \cdot cos (2 5^{\circ})

cos (3 5^{\circ}) cos (1 0^{\circ}) - sin (3 5^{\circ}) sin (1 0^{\circ})

3 csc (3 7^{\circ})

8 \cdot tan (4 5^{\circ})