CameraIcon

CameraIcon

SearchIcon

MyQuestionIcon

MyQuestionIcon

ntIf cos-1(x/...

Question

ntIf cos-1(x/m) +cos-1(y/n)=α, then x2/ m2-2xycosα/mn+ y2/ n2 =n

Open in App

Solution

Suggest Corrections

thumbs-up

0

BNAT

mid-banner-image

Similar questions

{cos}^{- 1} \frac{x}{a} + {cos}^{- 1} \frac{y}{b} = α,

then prove that

\frac{x^{2}}{a^{2}} - 2 \frac{x y}{a b} cos α + \frac{y^{2}}{b^{2}} = {sin}^{2} α

c o s^{- 1} x - c o s^{- 1} (\frac{y}{2}) = α

4 x^{2} - 4 x y cos α + y^{2} =

s i n^{- 1} (x / a) + c o s^{- 1} (y / b) = α

x^{2} / a^{2} + y^{2} / b^{2}

If ${cos}^{- 1} x + {cos}^{- 1} y = \frac{π}{2}$ and ${tan}^{- 1} x - {tan}^{- 1} y = 0$ then $x^{2} + x y + y^{2}$ is equal to

{cos}^{- 1} x + {cos}^{- 1} y + {cos}^{- 1} z = π

then, prove that

x^{2} + y^{2} + z^{2} + 2 x y = 1

View More

Explore more

Standard XII Mathematics