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“i » TYPES OF ANGLES fu onomélny . + NULL ANGLE ~ &- 0° od : " ~ Comes THE GREEK WORD" TRIGOKON” WHICH MEANS TRIANGLE + RicuT ANGE - = go° fr “METRIA” MEANING MEASUREMENTS, i "y BRANQUES OF TRIGONOMETRY + AcuTe ANGLE « O"£ & < 90° OBTUSE ANGLE - 90° < 8 < 190° STRAIGHT ANGLE - 8 = 180° * REFLEX ANGLE - (80°49 < 3c0* A. Plante TRaconoMetRY ~ DEALS WIT TRIANGLES ul THE Two * PERIGON - 9 = 360° OMENSIONS OF THE PLANE. 2. SPHERICAL TRIGONOMETRY)» CONCERNS wm TRIANGLES EXTRACTED FROM Tue SURFACE. OFA SPHERE, » FLawe Teuncuss ze Weeorensuse L-RICHT TRUNGLE =) 4 TRIANGLE UAT HAS A RIGIT TRIANGLE ANGLE. ZN q 2. OBUGQUE TRIANGLE + A TRIANGLE THAT DOES WOT WAVE SKoe ADTACEAE RIGHT ANGLE. Bard * Sit Q = SIE OPPOSITE RYPOTENUSE $F aAncie B + Gos Q . SIDE ADTACENT RYPOTENUSE ° % SITS TAN @ » SIOE OPPO: Vertex ® . S10 ADTACENT CONVERSION. FACTORS [2. THE PYTACOREAN THEOREM) 4 REVOLUTION = 360 DEGREES FORMULATED BY PYTHAGORAS = 27 RADIANS = 4op GRADIANS c Zz) » SOLUTIONS Tb PLANE RIGHT TRIANGLE [. PUMOAMENTAL TRIGONOMETRIC FUNCTIONS) , SICE OPPOSTTE. *CSC « hYPOTEHUSE SOE OPPOSTIE * SEC = __RYPOTENUSE SOE ADJACENT "COT = Sloe ADJACENT SADE OPPOSE STATES AAT “IW A RIGHT TRIANGLE , THE SUM OF THE SQUARES OF THE SIPES Is EGUAL TO TWE SQUARE oF THE YPOTENUSE.” 2 asb* «¢ 
