Question 1

What functions does the scientific calculator support?

Accepted Answer

The calculator supports all standard arithmetic (+, −, ×, ÷, %), trigonometric functions (sin, cos, tan and their inverses), logarithms (log base 10 and natural log ln), square root, powers (xⁿ), factorial (n!), absolute value, mathematical constants (π, e), and memory storage (MC, MR, M+, M−).

Question 2

What is the difference between DEG and RAD mode?

Accepted Answer

DEG (degrees) and RAD (radians) determine how angles are interpreted by trigonometric functions. In DEG mode, sin(90) = 1 (90 degrees). In RAD mode, sin(π/2) = 1 (π/2 radians ≈ 1.5708). For most everyday calculations use DEG; for calculus and physics, use RAD.

Question 3

How do I calculate sin, cos, or tan of an angle?

Accepted Answer

Enter the angle value first, then press the sin, cos, or tan button. Make sure you are in the correct angle mode (DEG or RAD). For example, in DEG mode, entering 45 then pressing sin gives 0.7071 (sin 45°).

Question 4

How do I use the memory functions?

Accepted Answer

MS stores the current value in memory. MR recalls the stored memory value. M+ adds the current value to memory. M− subtracts the current value from memory. MC clears memory to zero. The memory indicator shows the stored value when memory is not empty.

Question 5

What is the order of operations?

Accepted Answer

The calculator follows standard mathematical precedence (PEMDAS/BODMAS): parentheses first, then exponents, then multiplication and division (left to right), then addition and subtraction (left to right). Use parentheses to control the order of complex expressions.

Question 6

How do I calculate a number to a power?

Accepted Answer

Use the xⁿ button: enter the base, press xⁿ, then enter the exponent, and press =. For example: 2 xⁿ 8 = 256. For square (x²), enter the number and press x² directly. For square root, press √ after entering the number.

Question 7

Why does my trigonometry result look wrong?

Accepted Answer

Check your angle mode — this is the most common cause. If you expected sin(90) = 1 but got −0.448, you are in RAD mode (sin of 90 radians ≠ sin of 90°). Click the DEG button to switch to degrees mode.

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