Staciojo trikampio smailiojo kampo sinusas, kosinusas, tangentas

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APPLICATION OF THE SINE, COSINE AND TANGENT OF
THE RIGHT TRIANGLE S ACUTE ANGLE

• Staciojo trikampio smailiojo kampo sinusas,
  kosinusas, tangentas

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Mokymo(si) uždavinys

• Šioje pamokoje išmoksite
• Remdamiesi teorija, naudodamiesi kompiuterine
  programa MATHEMATICAM_at_th Desktop ir dirbdami
  porose išspresti 3 iš 6 I ir II dalies uždavinius
  apie staciojo trikampio smailiojo kampo sinusa,
  kosinusa, tangenta ir nusakyti bent tris iš
  penkiu savoku anglu kalba.

3
Key Words

• ANGLE
• The space between two lines or surfaces at the
  point at which they touch each other, measured in
  degrees.
• RIGHT ANGLE
• The angle wchich equals to 90.
• RIGHT-ANGLED TRIANGLE
• A triangle with the right angle.

4

• HYPOTENUSE
• The side opposite the right angle in a
  right-angled triangle.
• RATIO
• The relationship between two groups or amounts,
  which expresses how much bigger one is than the
  other.

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Sine, Cosine and Tangent Ratios

• http//www.youtube.com/watch?vY6UW9rFUa5E

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Memory Strategies How to Remember SOH CAH TOA

• Well, "sohcahtoa" may be easy for you to remember
  ... but heres another way to help you remember
• Sailors Often Have Curly Auburn Hair Till Old
  Age.
• Or perhaps you prefer one of these
• Some Old Horses Can Always Hear Their Owners
  Approach.
• Some Old Hen Caught Another Hen Taking One Away.
• Source http//www.mathsisfun.com/algebra/sohcahto
  a.html

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Exercise 1
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Solution
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Remember the words

• To find nustatyti
• Length ilgis
• Missing trukstamas
• Side kraštine
• Angle kampas
• Solution - sprendimas

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Solution d 1022.01m
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Remember the words

• To reach pasiekti
• Boarder riba
• Distance atstumas
• To save sutaupyti
• Directly tiesiai
• To calculate skaiciuoti, apskaiciuoti
• Way - budas

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Exercise 3
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Solution
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Remember the words

• To determine nustatyti
• Solution - sprendimas

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Exercise 4
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Solution b 5078.36m
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Remember the words

• Breadth plotis
• Downstream pasroviui
• Side of the river upes puse
• How broad... kokio plocio...
• At least - mažiausiai