Scientific Calculator
Trig, logs, powers — free, no signup
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Scientific Calculator Functions
Trigonometry
sin, cos, tan and their inverses (asin, acos, atan). Switch between degrees and radians with the DEG/RAD toggle.
Logarithms
log() for natural logarithm (base e) and log10() for base-10 logarithm. Essential for exponential calculations.
Powers & Roots
Use the ^ operator for powers (e.g. 2^10 = 1024). sqrt() for square roots.
Constants
π (pi ≈ 3.14159) and e (Euler's number ≈ 2.71828) are built in.
Parentheses
Group expressions with ( and ) to control calculation order.
Modulo (%)
Find the remainder of a division. Useful for checking divisibility.
Frequently Asked Questions
What is the difference between DEG and RAD mode?
In DEG mode, angles are in degrees (0–360). In RAD mode, angles are in radians (0–2π). Most everyday uses of sin/cos/tan use degrees; scientific and programming contexts often use radians.
What does sin(30) equal?
In DEG mode: sin(30°) = 0.5. In RAD mode: sin(30 radians) ≈ -0.988. Always check your angle mode before computing trig functions.
What is e (Euler's number)?
e ≈ 2.71828 is the base of the natural logarithm. It appears in exponential growth formulas, compound interest, probability distributions, and many areas of mathematics and physics.
How do I compute 2 to the power of 10?
Enter 2^10 and press = to get 1024. The ^ symbol represents exponentiation.
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