jordandabrat
13.02.2021 •
Mathematics
Find C. Leave your answer in simplified radical form.
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Ответ:
9514 1404 393
7√2
Step-by-step explanation:
The triangle is a "special triangle", an isosceles right triangle. The side lengths of this triangle have the ratios 1 : 1 : √2. Multiplying these ratio values by 7, the length of the leg, you find ...
c = 7×√2
c = 7√2
If you like, you can go through the Pythagorean theorem and/or trigonometry to find the same thing.
7/c = sin(45°)
c = 7/sin(45°) = 7/(1/√2) = 7√2
Or ...
c² = 7² + 7² = 98 . . . . using the Pythagorean theorem*
c = √98 = 7√2
__
* This requires you recognize the triangle is isosceles, so the other leg is also 7. Of course, you know that as soon as you see a 45° acute angle in a right triangle.
Ответ:
Cylinders have two circular bases
Cones have one circular base
The lateral area of a cylinder is related to circumference of the circular bases.
Step-by-step explanation:
In Determining the statements that characterize cylinders and cones. All that apply in this context are :
1) Cylinders have two circular bases
2) Cones have one circular base
3) The lateral area of a cylinder is related to circumference of the circular bases.
Furthermore, in a general context, A cylinder has traditionally been or comprises of a three-dimensional solid, one of the most basic of curvilinear geometric shapes or curves. It is the idealized version of a solid physical tin can which processed lids on top and bottom. While a cone is a three-dimensional geometric shape or a set of line segment that taper smoothly from a flat base (though not necessarily, but mostly circular) to a point called the vertex.