How to Use a Scientific Calculator
A scientific calculator goes far beyond the four basic operations. It handles the functions you meet in algebra, geometry, trigonometry, and physics: sine, cosine, and tangent; natural and base-10 logarithms; powers and roots; factorials; and constants like ฯ and e. The key skill is entering expressions in the right order โ brackets are your best friend.
Degrees vs. Radians
The single most common scientific-calculator mistake is the angle mode. In DEG mode, sin(30) = 0.5; in RAD mode the same input means sin(30 radians), a completely different number. Always check the mode indicator before doing trigonometry โ this calculator shows it above the keypad.
Chaining Calculations
Long problems are easier in pieces: compute an intermediate result, then reuse it with the ans key instead of retyping rounded decimals. The history tape on the right keeps every calculation, and clicking any result loads it back into the display.
Logarithms and Powers
Remember that log means base-10 and ln means base-e. For powers, use aแต: 2^10 means 2 raised to the 10th power. Roots work the same way in reverse โ โ27 is the cube root of 27, equal to 3.
Need step-by-step algebra instead? Try our algebra calculator.