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5.3 Apply the SINE and COSINE ratios 5.1, 5.3 HW Quiz: Wednesday Quiz: Friday Midterm: Oct. 6
Sine and Cosine Ratios Are trigonometric ratios for acute angles that involve the lengths of a leg and the hypotenuse of a right triangle. Acute angles measure less than 90 o
Sine and Cosine Ratios Let ΔABC be a right triangle with acute A. The sine of A and cosine of A (written as sinA and cosA) are defined as follows: A B C
Sine and Cosine Ratios OPPOSITE HYPOTENUSE ADJACENT HYPOTENUSE
Find SINE ratios Find sinX and sinY. Write each answer as a fraction and as a decimal rounded to four places (the ten-thousandth place)
Find COSINE ratios Find cosX and cosY. Write each answer as a fraction and as a decimal rounded to four places.
Extra Practice Find sinA and sinB.
Extra Practice Find cosA and cosB.
Find side lengths using SINE and COSINE Find x. Round to the nearest tenth.
Extra Practice Find the value of x. Round to the nearest tenth.
Homework P #1-12, 15-17, 21-26
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Find the missing measures. Write all answers in radical form. 60° 30° 10 y z Warm – up 3 45 y 60 30 x 45
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Notes # ____. trigonometry trigonometry : the study of the properties of triangles trigonometric ratio trigonometric ratio : ratio of measures of two.
Copyright © Cengage Learning. All rights reserved. 4.3 Right Triangle Trigonometry.
Measurement Pythagorean Relationship 3 (Finding the length of an unknown leg)
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SOH-CAH-TOA. Warm – up: Find the missing measures. Write all answers in radical form. 45° x w 7 60° 30° 10 y z.
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7-5 The SSA Condition and HL Congruence. The abbreviations SsA and HL stand for two other combinations of measures of corresponding sides and angles in.
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CH 8 Right Triangles. Geometric Mean of 2 #’s If you are given two numbers a and b you can find the geometric mean. a # = # b 3 x = x 27 Ex ) 3 and 27.
Trigonometry. A review of basic trigonometry SOH CAH TOA ‘Opposite’ and ‘adjacent’ are defined by the angle that is being considered. opposite adjacent.
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