What Is a Scientific Calculator?
A scientific calculator handles advanced mathematics beyond basic arithmetic. It is essential for students in matriculation, FSc, O-Levels, A-Levels, engineering, and university courses across Pakistan. Our CalcNova scientific calculator runs entirely in your browser — no app download, no login.
It supports trigonometric functions (sin, cos, tan), logarithms (log base 10, natural log), exponents, square roots, absolute values, and the constants π and e.
Key Functions Explained
sin(x)
Sine — opposite ÷ hypotenuse
sin(30°) = 0.5
cos(x)
Cosine — adjacent ÷ hypotenuse
cos(60°) = 0.5
tan(x)
Tangent — opposite ÷ adjacent
tan(45°) = 1
log(x)
Base-10 logarithm
log(1000) = 3
ln(x)
Natural log — base e
ln(e) = 1
xⁿ
Power / Exponent
2**8 = 256
√x
Square root
√144 = 12
π / e
Mathematical constants
π ≈ 3.14159
Trigonometry — Common Angle Values
These values appear in every physics and math exam. Memorise or use our calculator:
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | 0.5 | 0.866 | 0.577 |
| 45° | 0.707 | 0.707 | 1 |
| 60° | 0.866 | 0.5 | 1.732 |
| 90° | 1 | 0 | ∞ |
How to Use the Calculator
- Press sin / cos / tan then type the angle value in degrees
- Press log for base-10 or ln for natural log
- Use xⁿ (the ** key) to raise a number to any power
- Press DEG to toggle between degrees and radians
- Use ( ) brackets to group expressions correctly
- Press C to clear, or ⌫ to delete the last entry
💡 Exam Tip
Most Pakistani board exams (Matric, FSc) use degree mode. Always confirm your calculator is in DEG mode before a trig question.
Logarithm Rules — Quick Reference
| Rule | Formula | Example |
|---|---|---|
| Product | log(ab) = log a + log b | log(100×10) = 2+1 = 3 |
| Quotient | log(a/b) = log a − log b | log(1000/10) = 3−1 = 2 |
| Power | log(aⁿ) = n·log a | log(10³) = 3·1 = 3 |
| Change of base | logₙ(x) = log(x)/log(n) | log₂(8) = log8/log2 = 3 |
Frequently Asked Questions
Does this calculator support radians?
Yes. Press the DEG button on the calculator to switch between degrees and radians mode.
How do I calculate sin 45 degrees?
Make sure you're in DEG mode, press sin, type 45, close the bracket, and press =. The result is 0.7071.
What is the difference between log and ln?
log (or log₁₀) is base-10 logarithm. ln is the natural logarithm with base e (≈2.718). In Pakistan's board exams, "log" almost always means log₁₀.
Can I use this for FSc physics and math?
Absolutely. This calculator covers all functions required for FSc Part 1 and Part 2 physics, math, and chemistry.