Variant 1 1. The man is 4 m away from the street lamp. Its angle of incidence relative to a street lamp is
60 °. Use the picture below to find the height of the street light.
60
[3]
2. The side of a rhombus is 10 cm, and its diagonal is 12 cm. Find the second diagonal of the
rhombus.
[4]
3. Given ctga Find cosa
[3]
4. The height of the hypotenuse of a right triangle divides the hypotenuse into segments of
length 4 cm and 9 cm. Find the legs of a right triangle.
C
5. In an equilateral trapezoid ABCD, BC is 5 cm, the height CE is 4V3, and the leg makes an
angle of 30° with the base AD. Find the base of the trapezoid AD.
[6]​

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