on April 23, 2022
What is the difference between algebra and linear algebra?
Space and AstronomyAlgebra is almost (as mentioned by Steve) confused as being fancy arithmetic. However, algebra just refers to manipulations of more abstract entities. Linear algebra refers to algebraic manipulation of straight lines, vectors, scalars, system of linear equations, and matrices (Basics). Is linear algebra harder than algebra? Linear algebra is considered intermediate-level math. Linear algebra is
on April 23, 2022
Are trigonometric functions relations?
Space and AstronomyTrigonometric Relations As the name suggests, these relations involve two trigonometric ratios which are connected by inverse relations between them. For example, sin θ = 1/ cosec θ or sin θ x cosec θ = 1. cos θ = 1/ sec θ or cos θ x sec θ = 1. What type of functions are
on April 23, 2022
What is the mathematical equation for circumference?
Space and AstronomyC = 2πrC = 2πr. What is the formula to find the circumference? To calculate the circumference, you need the radius of the circle: Multiply the radius by 2 to get the diameter. Multiply the result by π, or 3.14 for an estimation. That’s it; you found the circumference of the circle. What is the
on April 23, 2022
What is the root word for asteroid?
Space and AstronomyThis prompted the astronomer Sir William Herschel to propose the term “asteroid”, coined in Greek as ἀστεροειδής, or asteroeidēs, meaning ‘star-like, star-shaped’, and derived from the Ancient Greek ἀστήρ astēr ‘star, planet’. What is the root in asteroid? asteroid (n.) “one of the planetoids orbiting the sun, found mostly between Mars and Jupiter,” 1802, coined
on April 23, 2022
What is SEC Cosec and cot?
Space and AstronomyWhat are sec cosec and cot used for? The cosecant is the reciprocal of the sine. The secant is the reciprocal of the cosine. The cotangent is the reciprocal of the tangent. What does sec and cosec mean? The secant of x is 1 divided by the cosine of x: sec x = 1 cos
on April 23, 2022
Are all four sides of a rhombus congruent?
Space and AstronomyAll sides of a rhombus are congruent, so opposite sides are congruent, which is one of the properties of a parallelogram. , all 4 sides are congruent (definition of a rhombus). . The same can be done for the other two sides, and know we know that opposite sides are parallel. Are the sides of
on April 23, 2022
What did Galileo believe about God?
Space and AstronomyGalileo suffered through the humiliation of having to deny his theories in order to save his life. He was Catholic, believed in God, but, on the other hand, he was a great believer in the role of science and the fascinating beauty of God’s creation. What does Galileo say about God? The quote: I do
on April 23, 2022
When was universe started?
Space and Astronomy13.8 billion years ago13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began. Who created of the universe? Many religious persons, including many scientists, hold that God created the universe and the various processes driving physical and
on April 23, 2022
What is the formula for shapes?
Space and AstronomyArea of 3D Shapes Formula Shape Surface area Terms Rectangular prism 2(wl+hl+hw) l = length w = width h = height Cylinder 2πr(r + h) r = radius of circular base h = height of the cylinder Cone πr(r + l) r = radius of circular base l = slant height Sphere 4πr2 r =
on April 23, 2022
What is back projection in CT?
Space and AstronomyBackprojection. The standard method of reconstructing CT slices is backprojection. This involves “smearing back” the projection across the image at the angle it was acquired. By smearing back all of the projections, you reconstruct an image. What is an advantage of filtered back projection compared with iterative reconstruction methods? The major advantage of iterative reconstruction