Trigonometric Ratios (pp. 1 of 4)
Trigonometric Ratios (pp. 1 of 4)
Trigonometric Ratios (pp. 1 of 4)
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<strong>Trigonometric</strong> <strong>Ratios</strong> (<strong>pp</strong>. 2 <strong>of</strong> 4)<br />
EXAMPLES:<br />
The value <strong>of</strong> trigonometric ratios can be found using given side measures <strong>of</strong> a right<br />
triangle.<br />
1. Find the sin L, cos L, tan L, sin M, cos M, and tan M. Express answers in<br />
fraction and decimal form. Round decimals to the nearest hundredth.<br />
sin L = sin M =<br />
cos L = cos M =<br />
tan L = tan M =<br />
M<br />
3<br />
N<br />
Geometry<br />
HS Mathematics<br />
Unit: 10 Lesson: 02<br />
Given an acute angle <strong>of</strong> a right triangle, any <strong>of</strong> the trig functions can be found using tables<br />
or a calculator.<br />
2. Use a calculator to express each answer accurate to ten thousandths.<br />
a. sin 42 o = x b. cos 62 o = x c. tan 72 o = x<br />
4<br />
5<br />
Given side measures <strong>of</strong> a right triangle, either <strong>of</strong> the two acute angles can be found using<br />
tables or a calculator.<br />
3. Use a calculator to find the angles to the nearest tenth <strong>of</strong> a degree.<br />
a. sin A = 0.7245 b. cos F = 0.1212 c. tan M = 0.4279<br />
©2009, TESCCC 08/01/09 page 50 <strong>of</strong> 60<br />
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