3 Apply the Sine and Cosine Ratios

Aug 21, 2013 · Use a calculator to simplify. Step 2 Find y. _cos 35o_ = Write ratio for _cosine_ of _35°_. cos 35o = Substitute. _20 ( cos 35o_ = y Multiply each side by _20_. _16.4_ ( y Use a calculator to simplify. Your Notes. Example 6. Use a special right triangle to find a sin and cos. Use a special right triangle to find the sine and cosine of a 30 ... ................
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