log (common logarithm) uses base 10: log(100) = 2. ln (natural logarithm) uses base e â‰ˆ 2.71828: ln(e) = 1. log is common in engineering; ln is common in mathematics and science.

Scientific Calculator Online - sin, cos, tan, log, ln, sqrt

Q: What is the value of sin(90Â°)?

sin(90Â°) = 1. In radians, sin(Ï€/2) = 1. Make sure to select the correct DEG or RAD mode in the calculator.

Q: What does the EXP button do?

EXP (scientific notation) multiplies by a power of 10. For example, 1.5 EXP 3 = 1.5 Ã— 10Â³ = 1500. It is used for very large or very small numbers.

Q: What is the difference between degrees and radians?

Degrees divide a circle into 360 parts. Radians measure angles by arc length: 2Ï€ radians = 360Â°. Most scientific and engineering work uses radians; everyday geometry uses degrees.

How to Use the Scientific Calculator

This online scientific calculator supports all standard operations as well as trigonometric functions (sin, cos, tan), logarithms (log, ln), powers (xÂ², xÂ³, xâ¿), square root, the constants Ï€ and e, and scientific notation (EXP). Toggle between degree and radian mode for trigonometric calculations. Results are saved in the history panel for reference.

DEG/RAD: Switch between degree and radian mode for trig functions.
ANS: Inserts the last result into the current expression.
xâ¿: Enter the base, press xâ¿, then enter the exponent and press =.
EXP: Scientific notation - 1.5 EXP 6 = 1,500,000.
History: Last 10 calculations are shown on the right panel.

Frequently Asked Questions

What is the value of sin(90Â°)?

sin(90Â°) = 1. In radians, sin(Ï€/2) = 1. Always confirm the DEG or RAD mode is correctly selected before computing trigonometric values.

What is log vs ln?

log (common logarithm) uses base 10: log(100) = 2. ln (natural logarithm) uses Euler's number e â‰ˆ 2.71828 as its base: ln(e) = 1. log is widely used in engineering and pH calculations; ln appears in calculus, statistics, and physics.

What is the value of Ï€ (pi)?

Ï€ (pi) is approximately 3.14159265358979. It is the ratio of a circle's circumference to its diameter and appears in geometry, trigonometry, and physics.

What does the EXP button do?

EXP enters scientific notation, multiplying the current number by a power of 10. For example, pressing 1.5 then EXP then 3 and = gives 1500 (1.5 Ã— 10Â³). It is used for very large or very small numbers in physics and engineering.

What is the difference between degrees and radians?

Degrees divide a full rotation into 360 parts. Radians measure the angle by the arc length on a unit circle: 2Ï€ radians = 360Â°. Use DEG mode for everyday geometry; switch to RAD mode for calculus and advanced mathematics.