Page 18 - modul trigonometri bilingual

Competency Test 1

1. Take a look at the following ABC triangle.
C

15 cm

A 8 cm B

The cos A cot C is...

2. Known triangle ABC elbows in C. If the angle size of A is 36° and
the length of the AC is 10 cm, determine the length of BC.
3. Look at the following picture.

D

24 cm
y x
A B C

3 1
Known tan = dan tan = . Long AB is...
4 2

4. Rio stood in the school grounds and looked at the top of the
flagpole. The top of the flagpole is visible to Rio with an elevation
angle of 45°. Then, Rio walked 4 meters closer to the flagpole. In

this position the flagpole is visible with an elevation angle of 60°. If
Rio's height is 150 cm, determine the height of the flagpole. (√3 =
1,73).

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