angle of depression 俯角 angle of elevation 仰角 angle of friction 静摩擦角; 极限角 angle of greatest slope 最大斜率的角 angle of inclination 倾斜角 angle of intersection 相交角;交角 angle of projection 投射角 angle of rotation 旋转角 angle of the sector 扇形角 angle sum of a triangle 三角...
The angle of the sector is 0 radians and the radius of the circle is rcm.(a) Find an expression for 0 in terms of r.田The perimeter of the sector is 24.48cm.(b) Showthatθ=(24.48)/r-2田(c) Find the possible values of r.[3] ...
23 A sector of a circle has an angle of 60°. The are a of the sector is 50 m2.Calculate, to 3 significant figures,(a)the radius, in m, of the sector,m(3)(b) the perimeter, in m, of the sector.---m(3) 相关知识点: 试题来源:...
A central angle is an angle whose vertex is present at the center of a circle formed by the two radii as the sides of the angle. How do you find the central angle of a circle? The measure of a central angle is equal to the measure of the intercepted arc. You can also find the ...
This is the simplest method to find the area of the segment of the circle without the usage of the angle made by the chord and thus the area of sector could be found without the usage of angle made by chord. This is done by relating the area of segment to the area of sector....
area is 75 ° and the corresponding area is 7.5 π. What is the area of the whole circle?
In geometry, we learn that a portion or a slice of a circle is known as a sector of a circle. If a circle has an area equal to {eq}\pi r^2 {/eq}, then the area of a sector of a circle subtending a central angle of {eq}\theta {/eq} is equal ...
through all three vertices, and the radius of this circle is equal to half of the length of the hypotenuse. right angle triangle area the area of a triangle is the area enclosed by three sides of the triangle in a plane. the formula to find the area of a right triangle is given by:...
11 The diagram shows a sector o f a circle o f centre O. The angle subtended at the centre o f the circle is 45° and the are a o f the sector ABO is 10 cm2.B45°O f à(a) Convert 45° to radians, leaving your answer in terms o f π.Answer ... [1]..(b)Find ...
Find the central angle of a circle with an area of {eq}74400 {/eq} sq. units and a radius of {eq}75 {/eq}. Let {eq}\pi = 3.14 {/eq}. Area of a Circular Sector: A sector is very similar to a slice of pie or pizza where the vertex is a...