मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Find the cartesian co-ordinates of the point whose polar co-ordinates are π(12,π3).

Advertisements
Advertisements

प्रश्न

Find the cartesian co-ordinates of the point whose polar co-ordinates are `(1/2, π/3)`.

बेरीज
Advertisements

उत्तर

Here, r = `1/2` and θ = `π/3`

Let the cartesian coordinates be (x, y).

Then, x = r cos θ = `1/2 cos  π/3 = 1/2 xx 1/2 = 1/4`

And y = r sin θ = `1/2 sin  π/3 = 1/2 xx sqrt(3)/2 = sqrt(3)/4`

∴ The cartesian coordinates of the given point are `(1/4, sqrt(3)/4)`.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2021-2022 (March) Set 1

संबंधित प्रश्‍न

In Δ ABC with the usual notations prove that `(a-b)^2 cos^2(C/2)+(a+b)^2sin^2(C/2)=c^2`


In ΔABC, prove that `tan((A - B)/2) = (a - b)/(a + b)*cot  C/2`.


 

In ΔABC with usual notations, prove that 2a `{sin^2(C/2)+csin^2 (A/2)}` = (a +   c - b)

 

With usual notations, in ΔABC, prove that a(b cos C − c cos B) = b2 − c2


The principal solutions of cot x = -`sqrt3`  are .................


 In , ΔABC prove that 

`"sin"(("B" - "C")/2) = (("b" - "c")/"a") "cos"("A"/2)`                               


 In , ΔABC with usual notations prove that

(a-b)2 cos2 `("C"/2) +("a"+"b")^2 "sin"^2("C"/2) = "c"^2`


Find the Cartesian co-ordinates of the point whose polar co-ordinates are:

`(sqrt(2), pi/4)`


Find the Cartesian co-ordinates of the point whose polar co-ordinates are:

`(3/4, (3pi)/4)`


Find the polar coordinates of the point whose Cartesian coordinates are `(1, - sqrt(3))`.


Solve the triangle in which a = `(sqrt3 + 1)`, b = `(sqrt3 - 1)` and ∠C = 60°.


In any Δ ABC, prove the following:

ac cos B - bc cos A = a2 - b2


In any Δ ABC, prove the following:

`"cos 2A"/"a"^2 - "cos 2B"/"b"^2 = 1/"a"^2 - 1/"b"^2`


In Δ ABC, if a, b, c are in A.P., then show that cot `"A"/2, cot  "B"/2, cot  "C"/2` are also in A.P.


Show that `2 sin^-1 (3/5) = tan^-1(24/7)`


Solve: `tan^-1 ("1 - x"/"1 + x") = 1/2 (tan^-1 "x")`, for x > 0.


In ∆ABC, if ∠A = 30°, ∠B = 60°, then the ratio of sides is ______.


In ∆ABC, if sin2A + sin2B = sin2C, then show that a2 + b2 = c2 


Find the polar co-ordinates of point whose Cartesian co-ordinates are `(1, sqrt(3))`


In ΔABC, a = 3, b = 4 and sin A = `3/4`, find ∠B


With usual notations, prove that `(cos "A")/"a" + (cos "B")/"b" + (cos "C")/"c" = ("a"^2 + "b"^2 + "c"^2)/(2"abc")`


In ΔABC, if a cos A = b cos B, then prove that ΔABC is either a right angled or an isosceles triangle.


In ∆ABC, if `(2cos "A")/"a" + (cos "B")/"b" + (2cos"C")/"c" = "a"/"bc" + "b"/"ca"`, then show that the triangle is a right angled


In ΔABC, prove that `("a"^2sin("B" - "C"))/(sin"A") + ("b"^2sin("C" - "A"))/(sin"B") + ("c"^2sin("A" - "B"))/(sin"C")` = 0


In ΔABC, prove that `("b"^2 - "c"^2)/"a" cos"A" + ("c"^2 - "a"^2)/"b" cos"B" + ("a"^2 - "b"^2)/"c" cos "C"` = 0


In a ΔABC, 2ab sin`((A + B - C)/2)` = ______


The polar co-ordinates of P are `(2, pi/6)`. If Q is the image of P about the X-axis then the polar co-ordinates of Q are ______.


In Δ ABC, with the usual notations, if `(tan  "A"/2)(tan  "B"/2) = 3/4` then a + b = ______.


In ΔABC, if `cosA/a = cosB/b,` then triangle ABC is ______ 


In any triangle ABC, the simplified form of `(cos2A)/a^2 - (cos2B)/b^2` is ______


The smallest angle of the ΔABC, when a = 7, b = `4sqrt(3)` and c = `sqrt(13)` is ______.


If polar co-ordinates of a point are `(1/2, pi/2)`, then its cartesian co-ordinates are ______.


If PQ and PR are the two sides of a triangle, then the angle between them which gives maximum area of the triangle is ______.


If in a `triangle"ABC",` a2cos2 A - b2 - c2 = 0, then ______.


If in ΔABC, `sin  "B"/2 sin  "C"/2 = sin  "A"/2` and 2s is the perimeter of the triangle, then s is ______.


In ΔABC, if `"a" cos^2  "C"/2 + "c" cos^2  "A"/2 = (3"b")/2`, then a, b, c are in ______.


In a ΔABC, if `sin"A"/sin"C" = (sin("A" - "B"))/(sin("B" - "C"))`, then a2, b2, c2 are in ______.


If in a triangle ABC, AB = 5 units, AB = 5 units, ∠B = `cos^-1 (3/5)` and radius of circumcircle of ΔABC is 5 units, then the area (in sq.units) of ΔABC is  ______.


In triangle ABC, a = 4, b = 3 and ∠A = 60°. If ' c' is a root of the equation c2 – 3c – k = 0. Then k = ______. (with usual notations)


In ΔABC with usual notations, if ∠A = 30° and a = 5, then `s/(sumsinA)` is equal to ______.


The number of solutions of the equation sin 2x – 2 cosx + 4 sinx = 4 in the interval [0, 5π] is ______.


If in a ΔABC `a cos^2(C/2) + c cos^2(A/2) = (3b)/2`, then the sides a, b and c ______.


In a triangle ABC, ∠C = 90°, then `(a^2 - b^2)/(a^2 + b^2)` is ______.


With usual notations, in a triangle ABC, if θ is any real number, then a cos(B - θ) + b cos (A + θ) is 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×