结果1 题目 △ RST is a right triangle with side lengths of r, s, and t, as shown below. What is the value of cos^2S+cos^2R? ( ) A. 1 B. √2 C. √3 D. (√2)2 E. (1+√2)3 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
There exists many different categories of triangles that we differentiate from each other based on the relationships between the angles and side lengths of each type of triangle. One such type of triangle is the equilateral triangle. An equilateral triangle is a triangle wit...
What is a triangle with 3 acute angles? Can an equiangular triangle be scalene? A triangle has side lengths of 6, 8, and 9. What type of triangle is it? What is the length of the third side of this triangle? What are the sides of a right triangle?
解析 A Use any value for , say. Then the area of divided by the area of is divided by . The quotient is . 正方形的边长和圆的半径是相同的.那么圆的面积除以正方形的面积等于多少( )? . . . . 取,那么圆的面积是,正方形面积是,商为.故选.反馈 收藏 ...
Triangle (music) A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound. Square Denoting a unit of measurement equal to the area of a square whose side is...
A Use any value for r, say r=1. Then the area of C divided by the area of S is π×12=π divided by 12=1. The quotient is π. 正方形S的边长和圆C的半径是相同的.那么圆的面积除以正方形的面积等于多少( )? A.π B.2π C.4π D.4 取r=1,那么圆的面积是π,正方形面积是1,商...
After a full summer of rebuilding their friendship while Franklin Stern is rebuilding the Daily Planet, Lois and Clark make a plan to attend the re-opening carnival together. Lois is struggling with her feelings for two men, both of whom have said quite plainly that they don't want a relat...
What is the area of the largest rectangle that can be placed in a 5unit,12unit, and 13unit right triangle? You have a rectangular sheet of cardboard 30 cm by 42 cm to make a prism. Your prism can have any base shape you like and an...
(all sides of equal length), or scalene (no sides of equal length) based on the lengths of its sides, and we classify a triangle as obtuse (contains an angle greater than 90∘), acute (all angles are less than 90∘), or right (contains an a...
In geometry, a triangle is a three-sided polygon, meaning it is a two-dimensional shape with three straight sides. There are a number of different types of triangles in geometry, and they relate to one another in a number of ways, such as their side lengths and angle measures....