Elvis Presley was born in Mississippi and has an estimated net worth of $300 million. A singer and musician, Elvis popularized rock and roll in the 50's. Known for his wild performance style, good looks, and musicianship (largely influenced by African-American rhythm and blues), Elvis took the world by storm.
Right Triangle Similarity Acute Angle Similarity If one of the acute angles of a right triangle is congruent to an acute angle of another right triangle, then by Angle-Angle Similarity the triangles are similar. In the figure, â  M â â  Y , since both are right angles, and â  N â â  Z .
The same side lengths can be used to evaluate the trigonometric functions of either acute angle in a right triangle. See . We can evaluate the trigonometric functions of special angles, knowing the side lengths of the triangles in which they occur. See . Any two complementary angles could be the two acute angles of a right triangle. If two angles are complementary, the cofunction identities state that the sine of one equals the cosine of the other and vice versa. See . We can use trigonometric functions of an angle to find unknown side lengths.