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Topics
Pre-Algebra
Mean
Mode
Greatest Common Factor
Least Common Multiple
Order of Operations
Fractions
Mixed Fractions
Prime Factorization
Exponents
Radicals
Algebra
Combine Like Terms
Solve for a Variable
Factor
Expand
Evaluate Fractions
Linear Equations
Quadratic Equations
Inequalities
Systems of Equations
Matrices
Trigonometry
Simplify
Evaluate
Graphs
Solve Equations
Calculus
Derivatives
Integrals
Limits
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\sin ( \frac { \pi } { 2 } )
sin
(
2
π
)
Get the value of \sin(\frac{\pi }{2}) from trigonometric values table.
Get the value of
sin
(
2
π
)
from trigonometric values table.
1
1
Factor
1
1
Quiz
Trigonometry
5 problems similar to:
\sin ( \frac { \pi } { 2 } )
sin
(
2
π
)
Similar Problems from Web Search
How to find exact value of \displaystyle{\sin{{\left(\frac{\pi}{{24}}\right)}}} ?
How to find exact value of
sin
(
2
4
π
)
?
https://socratic.org/questions/59f61ae811ef6b5f7f1618c6
\displaystyle{\sin{{\left(\frac{\pi}{{24}}\right)}}}=\frac{{1}}{{2}}\sqrt{{{2}-\sqrt{{{2}+\sqrt{{3}}}}}} Explanation: As \displaystyle\frac{\pi}{{24}}=\frac{{180}^{\circ}}{{24}}={\left({7}\frac{{1}}{{2}}\right)}^{\circ} ...
sin
(
2
4
π
)
=
2
1
2
−
2
+
3
Explanation: As
2
4
π
=
2
4
1
8
0
∘
=
(
7
2
1
)
∘
...
Can \sin(\pi/25) be expressed in radicals
Can
sin
(
π
/
2
5
)
be expressed in radicals
https://math.stackexchange.com/questions/1288769/can-sin-pi-25-be-expressed-in-radicals
The answer to this question depends on exactly what you mean by expressed in radicals. In the sense which is usually meant in Galois theory courses, \cos \pi/25 is expressible in radicals, but in a ...
The answer to this question depends on exactly what you mean by expressed in radicals. In the sense which is usually meant in Galois theory courses,
cos
π
/
2
5
is expressible in radicals, but in a ...
How to calculate \cos(\pi/4) and \sin(\pi/4)? [closed]
How to calculate
cos
(
π
/
4
)
and
sin
(
π
/
4
)
? [closed]
https://math.stackexchange.com/q/2074238
In the sum of angle theorems, let a=b so that \cos(2a)=\cos^2(a)-\sin^2(a) By the last identity, notice that \cos^2(a)-\sin^2(a)=2\cos^2(a)-1 \cos^2(a)-\sin^2(a)=1-2\sin^2(a) Now let a=\pi/4 ...
In the sum of angle theorems, let
a
=
b
so that
cos
(
2
a
)
=
cos
2
(
a
)
−
sin
2
(
a
)
By the last identity, notice that
cos
2
(
a
)
−
sin
2
(
a
)
=
2
cos
2
(
a
)
−
1
cos
2
(
a
)
−
sin
2
(
a
)
=
1
−
2
sin
2
(
a
)
Now let
a
=
π
/
4
...
Solve \sin(\frac{\pi}{5}) analytically
Solve
sin
(
5
π
)
analytically
https://math.stackexchange.com/q/2248326
By repeated application of angle sum formulas we may get, \sin (5x)=\sin^5 x+5 \cos^4 x\sin x-10 \sin^3 x \cos^2 x Let x=\frac{\pi}{5} and let \sin (\frac{\pi}{5})=u then we have, 0=u^5+5(1-u^2)^2 u-10(1-u^2)u^3 ...
By repeated application of angle sum formulas we may get,
sin
(
5
x
)
=
sin
5
x
+
5
cos
4
x
sin
x
−
1
0
sin
3
x
cos
2
x
Let
x
=
5
π
and let
sin
(
5
π
)
=
u
then we have,
0
=
u
5
+
5
(
1
−
u
2
)
2
u
−
1
0
(
1
−
u
2
)
u
3
...
Non-trigonometric Proof for values of \sin(\frac{\pi}{6}) and \cos(\frac{\pi}{6})
Non-trigonometric Proof for values of
sin
(
6
π
)
and
cos
(
6
π
)
https://math.stackexchange.com/q/2113386
Hint: from \cos(2(\frac{\pi}{3})+\frac{\pi}{3})= \cos(\pi)=-1, using summation and double-angle formulas we have: \left(2\cos^2(\pi/3)-1 \right)\cos(\pi/3)-2\left(1-\cos^2(\pi/3)\right)\cos(\pi/3)+1=0 ...
Hint: from
cos
(
2
(
3
π
)
+
3
π
)
=
cos
(
π
)
=
−
1
, using summation and double-angle formulas we have:
(
2
cos
2
(
π
/
3
)
−
1
)
cos
(
π
/
3
)
−
2
(
1
−
cos
2
(
π
/
3
)
)
cos
(
π
/
3
)
+
1
=
0
...
Easy way of memorizing values of sine, cosine, and tangent
Easy way of memorizing values of sine, cosine, and tangent
https://math.stackexchange.com/q/1553990
Note the pattern: \sin 0^{\circ} = \frac{\sqrt{0}}{2} \sin 30^{\circ} = \frac{\sqrt{1}}{2} \sin 45^{\circ} = \frac{\sqrt{2}}{2} \sin 60^{\circ} = \frac{\sqrt{3}}{2} \sin 90^{\circ} = \frac{\sqrt{4}}{2} ...
Note the pattern:
sin
0
∘
=
2
0
sin
3
0
∘
=
2
1
sin
4
5
∘
=
2
2
sin
6
0
∘
=
2
3
sin
9
0
∘
=
2
4
...
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Get the value of \sin(\frac{\pi }{2}) from trigonometric values table.
Similar Problems
\cos ( \pi )
cos
(
π
)
\sin ( \frac { \pi } { 2 } )
sin
(
2
π
)
\tan ( \frac { 4 \pi } { 3 } )
tan
(
3
4
π
)
\csc ( 60 )
csc
(
6
0
)
\sec ( 180 )
sec
(
1
8
0
)
\cot ( \frac { 4 \pi } { 3 } )
cot
(
3
4
π
)
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