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The line 5x-y=3 is tangent to a circle at the point (2,7) and its centre is on the line x+2y=19 .find the equation of circle

Posted by Aditi Shourya 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 6 years, 11 months ago

The equation is:
(x−7)2+(y−−6)2=(√26)2

Explanation:

Write the equation of the tangent line in slope-intercept form so that we may observe its slope.

y=−5x+3

The slope m=−5

Because radius of the circle at point (2, -7) will be perpendicular to the tangent line, the slope of the radius is the negative reciprocal of the slope of the tangent line, 15, Write the equation of the line through the point with this slope:

−7=15(2)+b

b=−7−25

b=−375

y=15x−375 [1]

The center (h,k) will be at the intersection of equation [1] and the line:

x−2y=19 [2]

Substitute equation [1] into equation [2]:

x−2(15x−375)=19

x−25x+745=19

35x=215

x=7

Substituting for x in equation [2]:

7−2y=19

−2y=12

y=−6

Substitute the center (7,−6) and the point (2,−7) into the equation of a circle:

(2−7)2+(−7−−6)2=r2

#r = sqrt(26)

5Thank You

ANSWER

dy/dx =x+ycosx/1+sinx ,find partcular solution of differential equation when y=1,x=0

Posted by Abhi Naugain 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Sugam Kumari 4 years, 7 months ago

dy/dx=x+ycosx/1+sinx

ANSWER

Invertebrates and vereibrates

Posted by Nesha Sha 6 years, 11 months ago

CBSE > Class 11 > Biology

2 answers

Saba Elias 6 years, 11 months ago

Animals with an enternal skeleton made up of bones are called vertebrates. They belong to the kingdom of animalia . They have well developed internal skeleton , highly developed brain, have advanced nervous system.,outer covering of protective cellular skin. And invertebrates are the animal without a backbone they belong to the kingdom of animal kingdom no back bone no cellwall small and slow moving

Shahbaj Khan 6 years, 11 months ago

Simply we can say invertebrates which don't have backbone.and vertebrate which have backbone

ANSWER

What is carbonic anhydrase??

Posted by Pihu G 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 6 years, 11 months ago

The carbonic anhydrases form a family of enzymes that catalyze the interconversion between carbon dioxide and water and the dissociated ions of carbonic acid. The active site of most carbonic anhydrases contains a zinc ion.

ANSWER

Practical history

Posted by Zohaib Jamal 6 years, 11 months ago

CBSE > Class 11 > इतिहास

0 answers

ANSWER

SI unit of stress and strain

Posted by Raj Kumar Maddhesiya 6 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Vinay Gautam 6 years, 11 months ago

Newton per meter square =stress Strain =no units and dimensions

Gaurav Seth 6 years, 11 months ago

stress:ratio of load applied to the area of the specimen

units of stress is N/mm square

Strain:ratio of change in dimensions to the original dimensions of the specimen

Strain has no units

ANSWER

A ball is dropped from a height of 10m and it Rebonses to same height in the same line of motion . plot (1)Velocity time graph. (2)Acceleration time graph. (3)Displacement time graph.

Posted by Gambhir Acharya 6 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why doesn't elemental phosphoric acid is heated strongly?

Posted by Yaso Bhujel 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Who was norbu

Posted by Ritesh Gupta 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Rishab Chordia 6 years, 11 months ago

Norbu was a tibetan who wore windcheater,metal rimmed spectacles of western style.He was a tibetan ,but worked in beijing in chinese academy of socail science in the institution of ethnic literature.He was writting acadmic papers about kailash koraand its importance in various works in buddhist literature for many years

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The following set of quantam numbers is not possible. Explain,why,? N=2,l=3,m=-3,m=+1/2

Posted by Hardeep Singh Gobindpuri 6 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Annu Sheraya 6 years, 11 months ago

As azimutal quantum number must be less than the principal quantum number

ANSWER

Diffrentiate for x :- √cot√x

Posted by Rohan Singla 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Riya Singh 6 years, 11 months ago

1/2cot^-1/2√x×(-sec^2√x)×1/2x^-1/2

ANSWER

Find the equation of circle which touches the axes and whose centre lie on x-2y=3

Posted by Aditesh Singh 6 years, 11 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Where are ATP and NADPH used

Posted by Satyam Mondal 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 6 years, 11 months ago

ATP and NADPH act as energy driving factors in the biosynthetic phase (Calvin cycle) of photosynthesis. The Calvin cycle uses ATP and NADPH2 for the fixation and reduction of CO₂ to form carbohydrates.
Each Calvin cycle is completed in three phases—carboxylation, reduction and regeneration.
During reduction or the glycolytic reversal phase, carbohydrate is formed at the expense of the photochemically made ATP and NADPH. Here, two molecules each of ATP and NADPH are required for fixing one molecule of CO₂.

ANSWER

Find the value of tan π/8

Posted by Anil Sharma 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Akanksha Kumari? 6 years, 11 months ago

(2)^1/2 -1

ANSWER

Give an example of a transaction which increasess one liability and decrease other

Posted by Sanju Baba 6 years, 11 months ago

CBSE > Class 11 > Accountancy

1 answers

Mehak Ashta 6 years, 11 months ago

Payment of outstanding expenses....o/exp increase and capital decrease...

ANSWER

How to study physics well to clear doubt s and score good marks??

Posted by Akanksha Kumari? 6 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Lily ☺ 6 years, 11 months ago

Actually my physics teacher keep on used to say this . That i simply shared. That's it. ??

Ankit Singh ?????? 6 years, 11 months ago

Nice answer lily

Lily ☺ 6 years, 11 months ago

Write all the formulas in a paper . And memorize it completely. Do the sums using the memorized formula and not by seeing the formula. If 1st formula is wrong try with next formula. Try ,try till u get the answer without seeing the formula. Only by recalling the formula u r supposed to find. U need lot of patience for it.?☺ But the true is we don't have patience?.

ANSWER

Find acceleration of a point mass on a circle which poseses both translational and rotational motion.

Posted by Akanksha Kumari? 6 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Sir i am not able to understand chemistry properly please help me

Posted by Rkkhola 3059 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Akanksha Kumari? 6 years, 11 months ago

Ya alakh pandey's lectures are superb both of chemistry and physics

Priya Dharshini ? 6 years, 11 months ago

Read ncert... write all reactions in page. Memorize atleast 30 first elements of periodic table. Then in numericals. Write all given things connect it with formula and what all we need to write ans. Take help of teachers or youtube videos. Dont feel ashamed to ask doubts which is small or big. U are going to learn in school or tution. Ask as many doubts as possible.

Priya Mahla 6 years, 11 months ago

Just read ncert book line by line and word to word

ANSWER

Boyle's law with graph

Posted by I . V. C 6 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Ankit Singh ?????? 6 years, 11 months ago

a law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.

Akanksha Kumari? 6 years, 11 months ago

At constant temperature pressure is inversely proportional to volume. This is boyle law. The graph of p-v curve is parabolic in which upper part shows compression and lower part shows expansion. I am not able to draw graph on this site

3Thank You

ANSWER

Cos20•cos40•cos60•cos80=1/16

Posted by Asif Hussain 6 years, 11 months ago

CBSE > Class 11 > Mathematics

4 answers

Akanksha Kumari? 6 years, 11 months ago

In place of 60 +30

3Thank You

Akanksha Kumari? 6 years, 11 months ago

I have mistaken i-e:(60+20)

Akanksha Kumari? 6 years, 11 months ago

@= 20

Akanksha Kumari? 6 years, 11 months ago

Use: cos @× cos (60-@)×cos (60+@) =cos 3@/4 and cos 60= 1/2 Therefore cos 20.cos40.cos60.cos80 =cos 20 cos (60-20) cos (60+30) cos60 = cos 60.cos60/4 = 1/2×1/2×1/4 =1/16

ANSWER

Which cycle is known as calvin cycle??

Posted by Shruti Gupta 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Ayush Kumar Singh 6 years, 11 months ago

ANSWER

Where is bank reconciliation statement

Posted by Shubham Rawat 6 years, 11 months ago

CBSE > Class 11 > Accountancy

1 answers

Manpreet Kaur 6 years, 11 months ago

BRS is a list of statements that causes difference between bank balance as per cash book and bank balance as per pass book ? ?

ANSWER

Where is bank reconciliation statement?

Posted by Shubham Rawat 6 years, 11 months ago

CBSE > Class 11 > Accountancy

2 answers

Naman Kumar 6 years, 11 months ago

Brs may be defined as a statement which is prepared to reconcile the bank balances per cash book and pass book and to ascertain the causes of difference

Mehak Ashta 6 years, 11 months ago

Its a statement in which the dr. Balance of cash book should be matched with that of pass book.its draws out differences while balancing .....