1. Stačiojo trikampio smailiojo kampo sinusas, kosinusas, tangentas
APPLICATION OF THE SINE, COSINE AND TANGENT OF THE RIGHT TRIANGLE’ S ACUTE ANGLE
Stačiojo trikampio smailiojo kampo sinusas, kosinusas, tangentas

2. Mokymo(si) uždavinys
Šioje pamokoje išmoksite: Remdamiesi teorija, naudodamiesi kompiuterine programa Desktop“ ir dirbdami porose išspręsti 3 iš 6 I ir II dalies uždavinius apie stačiojo trikampio smailiojo kampo sinusą, kosinusą, tangentą ir nusakyti bent tris iš penkių sąvokų anglų 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.

5. Sine, Cosine and Tangent Ratios
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6. Memory Strategies: How to Remember SOH CAH TOA
Well, "sohcahtoa" may be easy for you to remember ... but here’s 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:

7. Exercise 1

8. Solution

9. Remember the words To find – nustatyti Length – ilgis
Missing – trūkstamas
Side – kraštinė
Angle – kampas
Solution - sprendimas

10. Solution: d= m

11. Remember the words To reach – pasiekti Boarder –riba
Distance – atstumas
To save – sutaupyti
Directly – tiesiai
To calculate – skaičiuoti, apskaičiuoti
Way - būdas

12. Exercise 3

13. Solution

14. Remember the words
To determine – nustatyti
Solution - sprendimas

15. Exercise 4

16. Solution: b= m

17. Remember the words Breadth – plotis Downstream – pasroviui
Side of the river – upės pusė
How broad... – kokio pločio...
At least - mažiausiai