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sᴏʟᴠᴇ ᴘʟᴇᴀsᴇ :
The elevation of the summit of a mountain from its foot is 45°. After
ascending 1 km towards the mountain upon an incline of 30°, the elevation
changes to 60°. The height of the mountain is?
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Answer:
Ultraviolet
Ultraviolet is a form of electromagnetic radiation with wavelength from 10 to 400 nm, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.
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