Cc Geometry H Hw 26 Worksheet With Answers Page 8
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102. Given an equilateral triangle with sides of length 9, find the length of the
altitude.
Confirm your answer using the Pythagorean Theorem.
Let's Sum it Up!
• The sine of an angle is equal to the cosine of its complementary angle, and the
cosine of and angle is equal to the sine of its complementary angle.
• Sin 90
0
= 1 and cos 0
0
= 1 and similarly, sin 0
0
= 0 and cosine of 90
0
= 1.
• The values for the cosine and sine values for the special angles are the same,
but they are in reverse order.
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