on April 25, 2022
What is the radius of a 20 ft circle?
Space and AstronomyWhat is the radius if circumference is 20? Answer. Answer: r=10π cm. What is the area of a 20 radius circle? 1 Answer. Area = 1256 inches squared. What is the radius of 18 ft? Dean R. The diameter is twice the radius, so would be 36 feet. How do you find an radius of
on April 25, 2022
What is the derivative of a log?
Space and AstronomyThe derivative of log x (base 10) is 1/(x ln 10). If the log has a base “a”, then its derivative is 1/(x ln a). i.e., d/dx(logₐ x) = 1/(x ln a). How do you derive the derivative of a log? To find the derivative of other logarithmic functions, you must use the change of
on April 25, 2022
What solid figure is a globe?
Space and AstronomysphereA sphere is known to be a solid figure which is round and it basically has the shape of a ball. For example, basketball is also a sphere. Another example of a sphere can be the earth we are standing on! When we look at a globe, we can see that the earth is three-dimensional
on April 25, 2022
What is a common vertex?
Space and AstronomyA common vertex is a vertex that is shared by two angles. A vertex is the point at the intersection of any two linear constructions. What is a common vertex and side? Adjacent angles are two angles that have a common vertex and a common side but do not overlap. In the figure, ∠1 and
on April 25, 2022
Who invented the armillary sphere?
Space and AstronomyWhere did the armillary sphere originate? The armillary sphere originated in ancient Greece, where it was used primarily as a teaching instrument, although bigger versions were used as observational tools. When was armillary sphere invented? In the west, the armillary sphere was invented by the Greek astronomer Eratosthenes in approximately 225 BCE; however, it was
on April 25, 2022
How hot is Fomalhaut?
Space and AstronomyIs Fomalhaut bigger than the sun? Fomalhaut is a hot blue star about 25 light-years away. It’s almost twice the mass and size of our sun but radiates over 16 times the sun’s energy. Fomalhaut has a companion star less than a light-year away from it. The companion is a yellowish-red star, about 70% the
on April 25, 2022
What is a glide reflection in geometry?
Space and AstronomyA glide reflection is a mirror reflection followed by a translation parallel to the mirror. Every glide reflection has a mirror line and translation distance. What is a glide reflection example? A typical example of glide reflection in everyday life would be the track of footprints left in the sand by a person walking on
on April 25, 2022
What are the moon phases for November 2019?
Space and AstronomyAll times in Eastern time.…November 2019. Moon Phase Date Time of Day First Quarter November 4 5:23 A.M. Full Moon November 12 8:37 A.M. Last Quarter November 19 4:13 P.M. New Moon November 26 10:07 A.M. What are the Moon phases for November 2020? November 2020 Moon Phase Date Time of Day Last Quarter November
on April 25, 2022
Is there any lunar eclipse today?
Space and AstronomyWhat is the time of lunar eclipse today? The lunar eclipse begins at 12.48 pm Indian standard time and goes on till 4:17 pm IST. Do we have lunar eclipse today in India? The partial lunar eclipse will take place on 19th November 2021. It is also a full moon night today, also known as
on April 25, 2022
Is inverse tan Arctan?
Space and AstronomyThe inverse of tangent is denoted as Arctangent or on a calculator it will appear as atan or tan–1. Note: this does NOT mean tangent raised to the negative one power. Is arctan same as tan inverse? The arctan function is the inverse of the tangent function. It returns the angle whose tangent is a