HSC Arts (English Medium) 12th Standard Board Exam - Maharashtra State Board Important Questions

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))`.

In ΔABC, if ∠A = 45°, ∠B = 60° then find the ratio of its sides.

In ΔABC, if cot A, cot B, cot C are in A.P. then show that a², b², c² are also in A.P.

Select the correct option from the given alternatives:

The principal solutions of equation sin θ = `- 1/2` are ______.

Select the correct option from the given alternatives:

The principal solutions of equation cot θ = `sqrt3` are ______.

Select the correct option from the given alternatives:

The general solution of sec x = `sqrt(2)` is ______.

Select the correct option from the given alternatives:

If cos pθ = cos qθ, p ≠ q, then ______.

`cos[tan^-1  1/3 + tan^-1  1/2]` = ______

Find the principal solutions of the following equation:

sin 2θ = `-1/2`

If | x | < 1, then prove that

`2 tan^-1 "x" = tan^-1 ("2x"/(1 - "x"^2)) = sin^-1 ("2x"/(1 + "x"^2)) = cos^-1 ((1 - "x"^2)/(1 + "x"^2))`

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

If polar co-ordinates of a point are `(3/4, (3pi)/4)`, then its Cartesian co-ordinate are ______

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

Find the principal solutions of cosec x = 2

In ∆ABC, if a = 13, b = 14, c = 15, then find the value of cos B

In ∆ABC, prove that `(cos 2"A")/"a"^2 - (cos 2"c")/"c"^2 = 1/"a"^2 - 1/"c"^2`

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 ∆ABC, prove that `sin  ((A - B)/2) = ((a - b)/c) cos  C/2`