Home
Class 11
MATHS
If A ,B ,C ,D are angles of a cyclic qua...

If `A ,B ,C ,D` are angles of a cyclic quadrilateral, then prove that `cos A+cos B+cos C+cos D=0`

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    MODERN PUBLICATION|Exercise FREQUENTLY ASKED QUESTIONS|48 Videos

  • TRIGONOMETRY

    MODERN PUBLICATION|Exercise NCERT EXAMPLES|6 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise Chapter test|12 Videos

Similar Questions

Explore conceptually related problems

If A,B,C,D are angles of a cyclic quadrilateral,prove that cos A+cos B+cos C+cos D=0

MA.B.C.D are the angles of a cyclic quadrilateral then cos 'fr cos B+cos C-cos D=

If A,B,C and D are the angles of cyclic quadrilateral, prove that: i) cosA + cosB+cosC+cosD ii) cos(180^(@)-A)+cos(180^(@)+B)+cos(180^(@)+C)-sin(90^(@))

Prove that a cos A+b cos B+c cos C<=s

If A,B,C,D are the angles of a cyclic quadrilateral and cos A+cos B= K(cos C + cos D), then the value of K is

if ABCD is a cyclic quadrilateral, then find the value of cosA cosB - cos C cos D.

A,B,C,D are the angles of a cyclic quardrilateral ABCD , what is the value of cos A+cos B + cos C + cos D ?

If ABCD is a cyclic quadrilateral,then the value of cos A-cos B+cos C-cos D is

If ABCD is a cyclic quadrilateral, then cos A + cos B is equal to

If A,B,C,D be the angles of a cyclic quadrilateral,taken in order, prove that: cos(180^(@)-A)+cos(180^(@)+B)+cos(180^(@)+C)-sin(90^(@)+D)=0