Question

 12 th question

Prove that the feet of perpendiculars from the origin on the lines x+y=4 , x+5y =26 and 15x -27y= 424 are collinear.

Calculate the number of calories required to raise the temperature of 50 g of water from 20 Celcius to 40 Celcius

A circular arc of length 2π cm subtends an angle [1/π] rad at its centre. Radius of circular arc is?

Maths class 10 solutions of chapter 8

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.

 show that

sin [n+1] x cos [n+2]x +cos [ n+1] x cos [n+1]x.cos [n+2] =sin [x+y]. 

.