M May Soh Cah Toa  X Y X Y X Y X Y X Y  (x,y) x y r sin  = yryr cos  = xrxr tan  = yxyx 0 <  < 9090 <  < 180180 <  < 270270 <  < 360 sin  >

M May Soh Cah Toa  X Y X Y X Y X Y X Y  (x,y) x y r sin  = yryr cos  = xrxr tan  = yxyx 0 <  < 9090 <  < 180180 <  < 270270 <  < 360 sin  > 0 cos  > 0 tan  > 0 sin  > 0 cos  < 0 tan  < 0 sin  < 0 cos  < 0 tan  > 0 sin  < 0 cos  > 0 tan  < 0 ++++++ + + + Allsintancos All + sin + tan + cos +

M May X Y AS TC 1 1 √2 sin45˚ = cos45˚ = tan45˚ = 1 √ 2 1 √ 2 1 45˚ 60˚ 30 ˚ sin60˚ = cos60˚ = tan60˚ = √ 3 2 1 2 √ 3 1 sin30˚ = cos30˚ = tan30˚ = 1 2 √ 3 2 1 √ 3 1 2 CAST diagram key angle  X Y    180 -  180 +  360 - 

M May Right angled triangle Pythagoras’ theorem Soh Cah Toa c a b c 2 = a 2 + b 2 sin  = a /c  cos  = b /c tan  = a /b The Sine Rule A C B a b c a sinA b sinB c sinC == sinA a sinB b sinC c = = The Cosine Rule a 2 = b 2 + c 2 - 2 b c cosA b 2 = a 2 + c 2 - 2 a c cosB c 2 = a 2 + b 2 - 2 a b cosC b 2 + c 2 - a 2 2 b c =cosA

M May Soh Cah Toa  X Y X Y X Y X Y X Y  (x,y) x y r sin  = yryr cos  = xrxr tan  = yxyx 0 <  < 9090 <  < 180180 <  < 270270 <  < 360 sin  >

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M May Soh Cah Toa  X Y X Y X Y X Y X Y  (x,y) x y r sin  = yryr cos  = xrxr tan  = yxyx 0 <  < 9090 <  < 180180 <  < 270270 <  < 360 sin  >

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Presentasjon om: "M May Soh Cah Toa  X Y X Y X Y X Y X Y  (x,y) x y r sin  = yryr cos  = xrxr tan  = yxyx 0 <  < 9090 <  < 180180 <  < 270270 <  < 360 sin  >"— Utskrift av presentasjonen:

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