Math Problem Statement

2sin(\pi )/(6)+\sqrt(3)\cos (\pi )/(6)

Solution

Let's evaluate the given expression:

2sin(π6)6+3cos(π6)6\frac{2 \sin\left(\frac{\pi}{6}\right)}{6} + \frac{\sqrt{3} \cos\left(\frac{\pi}{6}\right)}{6}

Step 1: Evaluate sin(π6)\sin\left(\frac{\pi}{6}\right) and cos(π6)\cos\left(\frac{\pi}{6}\right)

sin(π6)=12\sin\left(\frac{\pi}{6}\right) = \frac{1}{2} cos(π6)=32\cos\left(\frac{\pi}{6}\right) = \frac{\sqrt{3}}{2}

Step 2: Substitute these values into the expression

2×126+3×326\frac{2 \times \frac{1}{2}}{6} + \frac{\sqrt{3} \times \frac{\sqrt{3}}{2}}{6}

Step 3: Simplify the expression

The first term:

2×126=16\frac{2 \times \frac{1}{2}}{6} = \frac{1}{6}

The second term:

3×326=326=312=14\frac{\sqrt{3} \times \frac{\sqrt{3}}{2}}{6} = \frac{\frac{3}{2}}{6} = \frac{3}{12} = \frac{1}{4}

Step 4: Combine the terms

16+14\frac{1}{6} + \frac{1}{4}

To add these fractions, find a common denominator:

16=212,14=312\frac{1}{6} = \frac{2}{12}, \quad \frac{1}{4} = \frac{3}{12}

212+312=512\frac{2}{12} + \frac{3}{12} = \frac{5}{12}

Final Answer

The expression simplifies to 512\frac{5}{12}.


Would you like more details or have any questions?

Here are some related questions to consider:

  1. How do you calculate sin\sin and cos\cos for different angles?
  2. What is the importance of finding a common denominator?
  3. How would the expression change if π/6\pi/6 was replaced with a different angle?
  4. Can you simplify the expression using another method?
  5. How do these trigonometric identities relate to the unit circle?

Tip: When dealing with trigonometric functions, it’s often helpful to remember the key angles and their sine and cosine values for quick reference.

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Math Problem Analysis

Mathematical Concepts

Trigonometry

Formulas

Trigonometric identities

Theorems

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Suitable Grade Level

Grades 10-12