📚 How to Use the Scientific Calculator

Trigonometric Functions

Press sin, cos, or tan, then enter the angle and press =. Switch between DEG (degrees) and RAD (radians) using the mode buttons. Press INV to access inverse functions (sin⁻¹, cos⁻¹, tan⁻¹).

Powers and Roots

x² — squares the current number
x³ — cubes the current number
xⁿ — raises to any power (enter base, press xⁿ, enter exponent, press =)
√ — square root | ∛ — cube root

Logarithms

log — log base 10 (common logarithm)
ln — natural logarithm (base e)
INV + log → 10ˣ | INV + ln → eˣ

❓ Frequently Asked Questions

Q: What is the difference between DEG and RAD mode?

A: DEG (degrees) is used in everyday calculations — a full circle = 360°. RAD (radians) is used in mathematics and physics — a full circle = 2π radians. For most school calculations, use DEG. For calculus and advanced math, use RAD. sin(90°) = 1 in DEG mode. sin(π/2) = 1 in RAD mode.

Q: How do I calculate sin, cos, tan?

A: Press sin/cos/tan button → enter the angle → press =. Example: sin(30°) → press sin → type 30 → press = → result is 0.5. Make sure you are in the correct angle mode (DEG for degrees, RAD for radians).

Q: How do I calculate factorial (n!)?

A: Enter the number first → press n! → press =. Example: 5! → type 5 → press n! → press = → result is 120. Factorial is only defined for non-negative integers.