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In a fig. PA is a tangent to the circle. PBC is a secant & AD bisects angle BAC. Show that triangle PAD is an isosceles triangle.Also show that `/_CAD=1/2(/_PBA-/_PAB)`

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    X BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION-C|5 Videos

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In the figure PA is a tangent to the circle, PBC is secant and AD bisects angle BAC. Show that triangle PAD is an isosceles triangle. Also, show that: /_CAD=1/2[/_PBA-/_PAB]

In the given TA is a tangent to the cirlce and TBC is a secant. If AD bisects angle BAC, prove that: Delta ADT is isosceles.

In a triangle ABC, AB = AC. Show that the altitude AD is median also.

In a triangle ABC, side AC is greater than side AB and point D lies on side BC such that AD bisects angle BAC. Show that: angle ADB is acute.

In a triangle A B C , if acosA=bcosB , show that the triangle is either isosceles or right angled.

In Delta ABC, AB =AC and D is a piont in side BC such that AD bisect angle BAC. Show that AD is perpendicular bisector of side BC.

If A, B, C are the angles of a triangle ABC and if cosA=(sinB)/(2sinC) , show that the triangle is isosceles.

In a triangle A B C , if cos A=(sinB)/(2sinC) , show that the triangle is isosceles.

In a Delta ABC , D is the mid point of side AC such that BD =1/2 AC . Show that angleABC is a right angle.

If the bisector of the exterior vertical angle of a triangle be parallel to the base. Show that the triangle is isosceles.

X BOARD PREVIOUS YEAR PAPER ENGLISH-X Boards-All Questions
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