What is the value of tan((5pi)/3)cot((5pi)/6)+csc(pi/2) ?

The value of tan((5pi)/3)cot((5pi)/6)+csc(pi/2) is 4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

tan((5pi)/3)cot((5pi)/6)+csc(pi/2)

Solution

tan (\frac{5 π}{3}) cot (\frac{5 π}{6}) + csc (\frac{π}{2})

Solution

4

Solution steps

tan (\frac{5 π}{3}) cot (\frac{5 π}{6}) + csc (\frac{π}{2})

Rewrite using trig identities:

tan (\frac{5 π}{3}) = - 3

tan (\frac{5 π}{3})

tan (\frac{5 π}{3}) = tan (\frac{2 π}{3})

tan (\frac{5 π}{3})

Rewrite

\frac{5 π}{3}

π + \frac{2 π}{3}

= tan (π + \frac{2 π}{3})

Apply the periodicity of

tan

tan (x + π) = tan (x)

tan (π + \frac{2 π}{3}) = tan (\frac{2 π}{3})

= tan (\frac{2 π}{3})

= tan (\frac{2 π}{3})

Rewrite using trig identities:

\frac{sin ( \frac{2 π}{3} )}{cos ( \frac{2 π}{3} )}

tan (\frac{2 π}{3})

Use the basic trigonometric identity:

tan (x) = \frac{sin ( x )}{cos ( x )}

= \frac{sin ( \frac{2 π}{3} )}{cos ( \frac{2 π}{3} )}

= \frac{sin ( \frac{2 π}{3} )}{cos ( \frac{2 π}{3} )}

Use the following trivial identity:

sin (\frac{2 π}{3}) = \frac{3}{2}

sin (\frac{2 π}{3})

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}

= \frac{3}{2}

Use the following trivial identity:

cos (\frac{2 π}{3}) = - \frac{1}{2}

cos (\frac{2 π}{3})

cos (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} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{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} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= - \frac{1}{2}

= \frac{\frac{3}{2}}{- \frac{1}{2}}

Simplify

\frac{\frac{3}{2}}{- \frac{1}{2}} : - 3

\frac{\frac{3}{2}}{- \frac{1}{2}}

Apply the fraction rule:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{\frac{3}{2}}{\frac{1}{2}}

Divide fractions:

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

= - \frac{3 \cdot 2}{2 \cdot 1}

Refine

= - \frac{3 \cdot 2}{2}

Cancel the common factor:

2

= - 3

= - 3

Use the following trivial identity:

cot (\frac{5 π}{6}) = - 3

cot (\frac{5 π}{6})

cot (x)

periodicity table with

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} cot (x) \mp \infty 31 \frac{3}{3} 0 - \frac{3}{3} - 1 - 3

= - 3

Use the following trivial identity:

csc (\frac{π}{2}) = 1

csc (\frac{π}{2})

csc (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} csc (x) Undefiend 22 \frac{2 3}{3} 1 \frac{2 3}{3} 22 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} csc (x) Undefiend - 2 - 2 - \frac{2 3}{3} - 1 - \frac{2 3}{3} - 2 - 2

= 1

= (- 3) (- 3) + 1

Simplify

(- 3) (- 3) + 1 : 4

(- 3) (- 3) + 1

Remove parentheses:

(- a) = - a, - (- a) = a

= 33 + 1

Apply radical rule:

a a = a

33 = 3

= 3 + 1

Add the numbers:

3 + 1 = 4

= 4

= 4

Popular Examples

-e^{ln(cos(2))+1}-e

- e^{l n (c o s (2)) + 1} - e

arctan((\frac{-23)/(41)}{2/41})

arctan (\frac{\frac{- 23}{41}}{\frac{2}{41}})

(cos(60)+cos(30))/(csc^2(30)+sin^2(45))

\frac{cos ( 6 0 ^{\circ} ) + cos ( 3 0 ^{\circ} )}{csc ^{2} ( 3 0 ^{\circ} ) + sin ^{2} ( 4 5 ^{\circ} )}

-e^{ln(cos(2))+1}+e

- e^{l n (c o s (2)) + 1} + e

60cos(45)-70sin(60)-50sin(45)

60 cos (4 5^{\circ}) - 70 sin (6 0^{\circ}) - 50 sin (4 5^{\circ})

Frequently Asked Questions (FAQ)

What is the value of tan((5pi)/3)cot((5pi)/6)+csc(pi/2) ?
The value of tan((5pi)/3)cot((5pi)/6)+csc(pi/2) is 4