# If sides A and B of a triangle have lengths of 3 and 5 respectively, and the angle between them is #(pi)/4#, then what is the area of the triangle?

##### 1 Answer

Dec 7, 2015

Area=15/2

#### Explanation:

Area of a triangle when 2 sides are given with the angle included b/w them is given by:

```
area=1/2#(a*b*sinC)#
= 1/2(5*3*#1/sqrt(2))#
```