Find the area of the parallelogram 15 cm 8 cm
2 answers:
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Answer:
The length of rope is 20.0 ft . Hence, <u>option (1) </u> is correct.
Step-by-step explanation:
In the figure below AB represents pole having height 10 ft and AC represents the rope that is from the top of pole to the ground. BC represent the ground distance from base of tower to the rope.
The rope and the ground form a 30 degree angle that is the angle between BC and AC is 30°.
In right angled triangle ABC with right angle at B.
Since we have to find the length of rope that is the value of side AC.
Using trigonometric ratios
Putting values,
We know,
On solving we get,
AC= 20.0 ft
Thus, the length of rope is 20.0 ft
Hence, <u>option (1)</u> is correct.
Step-by-step explanation:
We have,
The wavelength of yellow light,
Frequency of yellow light,
It is assumed to find the speed of light in the yellow light.
The speed of a wave is given in terms of wavelength and frequency as :
So, the speed of light in a shade of yellow light is .