Microsoft PowerPoint - 4_DSE Talk_Math_Winnie.pptx [Read-Only]



(4~5) (5~7) (4~7) (4~6) (7~8)

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http://334.edb.hkedcity.net/doc/chi/curriculum/Math%20C&A%20G uide_updated_c.pdf

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1. 2. 3. ( , ) 4. 5. 6. 7. (sine) (cosine)(tangent)
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( )( )
DSE 2 2015

2014 . 14
8
()


← 1./
← 2.
← 3.()
9
()
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∠ 90° (⊥)∠ ° 62° ()
∠ ∠ () ∠ ∠ 62° 62° 90° 34° 12
(2012 DSE MATH CP2 Q41)
∠ 12°
∠ 12°

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(2012 DSE MATH CP2 Q17)
1 2 3 sin 3 ⇒ sin 2 2 7 sin 1425
(Sample DSE MATH CP2 Q23)
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8 2 3 ⇒ 3 16 2 ⇒
16 5 4 4 8 ?
2 2 3 ⇒ ?
132 4 3327
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254100
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…(1) …(2)
, 1.21 ⇒ 1.1
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(2012 DSE MATH CP1 Q19)



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(2012 DSE MATH CP1 Q19)




∠
37
∠

30
18
110° ?
V
(2014 DSE MATH CP1 Q.17)

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18.62065904 18.6

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9.31
9.31
18.6
10
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89.68402073 67.26301555
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