How to use the scientific calculator
- Tap the keys or type an expression, such as 2^10 or sin(30).
- Switch DEG/RAD to choose how angles are read by sin, cos and tan.
- Press = or Enter. Use ans to reuse the last result.
Frequently asked questions
What order are operations done in?
Parentheses first, then factorials and percentages, then powers (right to left), then multiplication and division, then addition and subtraction. So -2^2 is -4.
What is the difference between log and ln?
log is the base-10 logarithm, so log(100) is 2. ln is the natural logarithm with base e, so ln(e) is 1.
Should I use degrees or radians?
Use degrees for everyday angles such as 30° or 90°. Use radians in calculus and physics, where π radians equal 180°.
Can I type with my keyboard?
Yes. Type the expression directly, use * and / for multiplication and division, and press Enter for the result.