Use an Addition or Subtraction Formula to find the exact value of the expression, as demonstrated in Example 1.
sin 195°

Question

Use an Addition or Subtraction Formula to find the exact value of the expression, as demonstrated in Example 1.
sin 195°

mathmale · Answer

You don't strictly have to share Example 1 with the rest of us, but it might help!

It's quite easy to find the trig functions of certain angles, including {30, 60, 90, 120, 150, 180,  (and so on) degrees; also including {45, 135, 225, 270, (and so on).

You're given the angle 195 degrees.  Find smaller angles from those listed above, so that the sum of those two angles is 195 degrees.  Then we'll focus on answering the question you've posted.

mathmale · Answer

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