Challenger App

No.1 PSC Learning App

1M+ Downloads
In any triangle ABC cos- A+B/ 2 is equal to:

ASin C/2

BCos C/2

Csin A/2

Dcos B/2

Answer:

A. Sin C/2

Read Explanation:

.


Related Questions:

sin 1050° = ?
If the angles of a triangle are in the ratio 30° , 75° and 75° then the sides are in the ratio
When the sun is at an elevation of 45°, the length of the shadow of a tree is 15meters. Then the height of the tree (in metres) is :
image.png

Cos1o.cos2o.cos3o.......................cos100o is equal to