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jaidajordan34
20.05.2020 •
Mathematics
A 107-ft-tall building casts a shadow of 90 ft. To the nearest whole degree,
What is the angle of elevation to the sun?
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Ответ:
The answer is less than 50 degrees
explanation:
The solar elevation angle is the altitude of the Sun, the angle between the horizon and the centre of the Sun's disc. Since these two angles are complementary, the cosine of either one of them equals the sine of the other. They can both be calculated with the same formula, using results from spherical trigonometry.
Ответ:
Echolocation helps bats find food and avoid flying into obstacles.
Explanation;Bats are among the few organisms or mammals that are capable of using sound to navigate, a phenomenon called echolocation.More than half of the bat species use echolocation to detect obstacles in flight, find their way into roosts and forage.Echolocation together with physical features and psychological adaptations, allows bats to see with sound. Echolocation is produced by bats through the contraction of their larynx.