Download Review of Trigonometric Ratios

MCF 3M1 Unit 8 N- Right Triangle Trigonometry
Recall:
Example 1: For each figure below, determine sin A, cos A, and tan A.
a)
b)
Solution:
a) sin A =
b) sin A =
cos A =
cos A =
tan A =
tan A =
Example 2: Use the trigonometric functions on your calculator to determine the measure of pA for
the two triangles in Example 1.
Solution:
a)
b)
Example 3: Use the trigonometric functions on your calculator to check the ratios from Example 1.
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Example 2: Use a calculator to determine the following ratios.
a) sin 23° =
b) cos 54° =
c) tan 77° =
Example 3: Determine the following angles (nearest degree).
a) sin A = 0.6142
b) cos B = 0.6820
c) tan C = 1.562
Example 4: Determine the following angles to the nearest degree.
a) sin A =
b) cos B =
c) tan C =
Example 5: Determine side a, if pA = 30°
Example 6: Determine each value of x.
a)
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b)