ࡱ> dfc[  bjbjZYZY Y83b83b(jj$$E888)E+E+E+E+E+E+E.HJ+E86888+E@E9998" )E98)E99eC|D> H8CEVE0EClK8|lK$DlKD88988888+E+E=9p888E8888lK888888888jB :  Sec 3.4 Right Triangle Trigonometry Right Triangle Trigonometry Angles Name: Find the requested unknown angles of the following triangles using a calculator.  a. b. c. 2. Find the approximate unknown angle,(, using INVERSE trigonometric ratios (sin-1, cos-1, or tan-1).  a. cos ( = 0.823 b. c.   3. Indentify each of the following requested Trig Ratios. A. sin A = B. cos B = C. Measure of angle B =  7 10 ?( 5 8 ?( 3 9 ?( ( 9 5 11 7 ( ( = ( = ( = M. 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