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Popular >

sin(pi/2 5)

Solution

sin (\frac{π}{2} 5)

Solution

1

Solution steps

sin (\frac{π}{2} \cdot 5)

Simplify:

\frac{π}{2} \cdot 5 = \frac{5 π}{2}

\frac{π}{2} \cdot 5

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{π 5}{2}

= sin (\frac{5 π}{2})

sin (\frac{5 π}{2}) = sin (\frac{π}{2})

sin (\frac{5 π}{2})

Rewrite

\frac{5 π}{2}

as

2 π + \frac{π}{2}

= sin (2 π + \frac{π}{2})

Apply the periodicity of

sin

:

sin (x + 2 π) = sin (x)

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

= sin (\frac{π}{2})

= sin (\frac{π}{2})

Use the following trivial identity:

sin (\frac{π}{2}) = 1

sin (\frac{π}{2})

sin (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= 1

= 1

Popular Examples

- sin (2 (\frac{π}{4}))

arccot (- 6)

sin (\frac{π}{2} 4)

sin (3 0^{\circ}) \cdot 100

arcsech (1)

Frequently Asked Questions (FAQ)

What is the value of sin(pi/2 5) ?
The value of sin(pi/2 5) is 1