HOME
CALCULATOR
Calculator
Algebra
Calculus
Trigonometry
Matrix
Examples
Basic Math&Pre-Algebra
Algebra
Precalculus
Calculus
Trigonometry
Statistics
DOWNLOAD
FOR FREE
Algebra
Calculus
Trigonometry
Matrix
Type your math problem...
Solve
x
Cancel
Okay
Trigonometry
Trigonometry
sin
2
(
x
)
+
cos
2
(
x
)
Trigonometry
Trigonometry
1
+
sin
a
cos
a
cos
3
a
−
sin
3
a