se >,<, or= to compare the following trigonometric expressions.(1 point) sin 45°cos(π6)

1 answer

To compare the trigonometric expressions \( \sin 45^\circ \) and \( \cos \left( \frac{\pi}{6} \right) \), we can first find the values of each expression.

  1. Calculate \( \sin 45^\circ \): \[ \sin 45^\circ = \frac{\sqrt{2}}{2} \]

  2. Calculate \( \cos \left( \frac{\pi}{6} \right) \): \[ \cos \left( \frac{\pi}{6} \right) = \frac{\sqrt{3}}{2} \]

Now we have:

  • \( \sin 45^\circ = \frac{\sqrt{2}}{2} \)
  • \( \cos \left( \frac{\pi}{6} \right) = \frac{\sqrt{3}}{2} \)

Next, we compare \( \frac{\sqrt{2}}{2} \) and \( \frac{\sqrt{3}}{2} \):

To do this, we can compare \( \sqrt{2} \) and \( \sqrt{3} \):

  • \( \sqrt{2} \approx 1.414 \)
  • \( \sqrt{3} \approx 1.732 \)

Since \( \sqrt{2} < \sqrt{3} \), we conclude that: \[ \frac{\sqrt{2}}{2} < \frac{\sqrt{3}}{2} \]

Thus, we can write: \[ \sin 45^\circ < \cos \left( \frac{\pi}{6} \right) \]

The answer is: \[ \sin 45^\circ < \cos \left( \frac{\pi}{6} \right) \]