Evaluate sin(15°): animated lesson

1. 1. The problem
   Worked example

   $\sin\left(\frac{15\cdot\pi}{180}\right)$
2. 2. Step by step
   1. $$\sin\left(\frac{15\cdot\pi}{180}\right)$$
      Read the expression
   2. $$\sin\left(\frac{15\cdot\pi}{180}\right) = \sin\left(\frac{\pi}{12}\right)$$
      Simplify exactly
   3. $$\sin\left(\frac{15\cdot\pi}{180}\right) = 0.2588190451$$
      Evaluate using the order of operations (parentheses, exponents, multiplication and division, addition and subtraction)
3. 3. The answer
   $$0.2588190451$$

   sin((15*pi/180)) = 0.2588190451

4. 4. Check
   • ✓Decimal value: 0.258819045103

Exact values of sine, cosine, tangent and their reciprocals and inverses.

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