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## A right angled prism made from a material of refractive index 𝜇 is kept in air. A ray PQ is incident normally on the side AB of the prism.Find (in terms of 𝜇) the maximum value of 𝜃 upto which this incident ray necessarily undergoes total internal reflection at the face AC of the prism.

Asked by Indra 1st February 2015 7:55 PM

## Q no 25

Asked by sucharitasahoo1 26th November 2017 10:01 AM

## The lengths of a triangle are 6 cm, 8 cm and 10 cm. Then the length of perpendicular from the opposite vertex to the side whose length is 8cm is: (A) 5 cm (B) 4 cm (C) 6 cm (D) 2 cm

Asked by gujarsurjeet007 9th February 2018 5:05 PM

## in a right angle triangle pqr at q = 90 ,qm is a median prove that pq square +qr square+pr square = 8 qm square

Asked by sahiljeel2002 11th February 2018 10:21 AM

### CBSE IX Mathematics

Asked by Girishdhawan 1st July 2018 3:20 PM

## in a right angled triangle the hypotenuse is 2root2 times the perpendicular drawn from  the opposite vertex then then other acute angles of triangle are

Asked by gargpuneet989 9th July 2018 7:54 PM

## The perimeter of a right-angle triangle is 60 cm.Its hypotenuse is 25 cm.Find the area of the triangle.

Asked by Pphubom 23rd July 2018 6:25 AM

## in right angled tringleprove thatfour times the sum of the squareson the medians drawn from the acute anglesis equal tofive timesthe square on the hypotensues.

Asked by japooyani 2nd August 2018 8:32 AM

## What is RHS property ?

Asked by sm_tomar 13th August 2018 9:14 PM

## In a triangle ABC, AB = 6, BC = 8 and AC = 10. A perpendicular from B meets the side AC at D. A circle is drawn with radius BD and centre B. If the circle cuts AB and BC respectively at P and Q, then AP : QC is equal to

Asked by keshavendu35 23rd August 2018 10:47 PM

## Find the area of a quadilateral ABCD in which angle BCA=90° , AB =13 cm and ACD is an equilateral triangle  of side 12 cm. Please add a diagram and then solve .

Asked by bsap6777 28th August 2018 10:50 PM

## Find the distance between orthocentre and circumcentre of the triangle with vertices(0,0), (a,0),(0,b).  ans. with steps and diagram

Asked by keshavendu35 23rd September 2018 8:05 PM

## A ladder 37m long reaches a window which is 12m above the ground,on one side of the street. Keeping its foot at the same point,the ladder is turned to the other side of the street to reach a window at a height of 35m.Find the width of the street.

Asked by dibroy12 27th September 2018 7:52 PM

## Q.1.  If the sides of a triangle are 3cm,4cm and 6cm long ,determine wheather the triangle is a              right angled triangle.

Asked by anirudhsharma2009 17th October 2018 1:44 PM