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Addition of small numbers
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Multiplication of small numbers
Division of small numbers
Addition of large numbers
Subtraction of large numbers
Multiplication of large numbers
Division of large numbers
Fractions
Improper fractions
Mixed fractions
Decimal to fraction
Fraction to decimal
Fraction to percent
Percent to fraction
Least Common Denominator (LCD)
Least Common Multiple (LCM)
Greatest Common Factor (GCF)
Multiplication of small numbers
Division of small numbers
Addition of large numbers
Subtraction of large numbers
Multiplication of large numbers
Division of large numbers
Fractions
Improper fractions
Mixed fractions
Decimal to fraction
Fraction to decimal
Fraction to percent
Percent to fraction
Least Common Denominator (LCD)
Least Common Multiple (LCM)
Greatest Common Factor (GCF)
Multiplication of small numbers
Division of small numbers
Addition of large numbers
Subtraction of large numbers
Multiplication of large numbers
Division of large numbers
Fractions
Improper fractions
Mixed fractions
Decimal to fraction
Fraction to decimal
Fraction to percent
Percent to fraction
Least Common Denominator (LCD)
Least Common Multiple (LCM)
Greatest Common Factor (GCF)
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Trigonometry
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Double-Angle Calculator
Double-Angle Calculator
Published on: April 24, 2025
Compute sin(2θ), cos(2θ) or tan(2θ) using their double-angle identities.
Select Function
sin(2θ)
cos(2θ)
tan(2θ)
AC
a⁄b
1
2
3
4
5
6
7
8
9
0
.
=
+
−
×
*
÷
/
^
(
)
%
√
π
e
abs
sin
cos
tan
log
ln
exp
!
sin⁻¹
cos⁻¹
tan⁻¹
xʸ
Matrix
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