Tangents To A Circle
Bayani Gaba-gaba
A tangent just grazes a circle, touching it at a single point. There is one beautiful fact that makes every tangent question solvable: the tangent is perpendicular to the radius drawn to the point where they touch. That right angle is the key that unlocks the equation of the tangent.
In this lesson you will use the radius-tangent right angle, together with the gradient rules you already know, to find the equation of a tangent at a given point on a circle, without any calculus. Find the gradient of the radius, take its negative reciprocal, and you have the gradient of the tangent.
Manufura
- Solve problems involving tangents to a circle, including finding the equations of tangents (no use of calculus is expected).
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Tangents To A Circle. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- A tangent to a circle is perpendicular to which line at the point of contact? A. The diameter through the centre only B. The radius at that point C. Any chord D. The x-axis Answer: B
- A circle has centre O(0,0) and passes through P(3,4). What is the gradient of the radius OP? A. 3/4 B. 4/3 C. -3/4 D. -4/3 Answer: B
- For the same circle, what is the gradient of the tangent at P(3,4)? A. 4/3 B. 3/4 C. -3/4 D. -4/3 Answer: C
- The equation of the tangent at P(3,4) to the circle centre O(0,0) is: A. y = (4/3)x B. y = -(3/4)x + 25/4 C. y = (3/4)x + 4 D. y = -(4/3)x + 8 Answer: B
- A circle has centre C(1,2) and passes through P(4,6). The tangent gradient at P is: A. 4/3 B. 3/4 C. -3/4 D. -4/3 Answer: C
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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