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- <br /> � `2.21 NS .//o r✓ /�i� brodle har�9e �* <br /> N t _ <br /> ------ -------------- ----- <br /> 7-1 <br /> D <br /> Txsts H <br /> TRIGONOMETRIC #ORMULAE <br /> LA 1MOP LB = LPON _� 4PL <br /> -- -— - - -- --- - - -- ----- R - OB <br /> ioo A + a 1'= b =-sin B - OL< <br /> tan A -b OM MQ = Q = MQ =cot B = MQ- b 1 . <br /> cot A -ON NT = NT tan B - NT <br /> i o • <br /> OSIL-70 sec A =�� _ Q = OQ = cec B =OQ <br /> 0 <br /> OT OT <br /> - --- - -_-\ - - ----- ----— -- ----- " cec A =— _— = OT =sec B =OT <br /> ON 1 <br /> -- - <br /> vers A =— _ LM = covers B <br /> OP <br /> I ------- -- - — -_.—.------- -- -- OP—LP <br /> 1 cover A m OP =OP LP =veer B <br /> emuec A -,PQ -coemse.B <br /> oomaes A -p'P=enec B <br /> -- - - -- <br /> iinow 4A 1-sosA <br /> � -------- 1�--CosA 1 <br /> o ----- -. -— sin 2A - 2 du A am cos 2A -cod A—any A <br /> } sin A sin B sin Cl <br /> ----- Law of&Zww <br /> s B C <br /> - - - ---- ---- Law of CDOWO d ..a2+pe—2 ab coo C <br /> - - - -- — ---- --------- Law of Taoe°°taa+b tau 34(A+B) <br /> a-b tan (A—B) <br /> 1 <br />