Lesson: Finding the Area of Triangle Using Trigonometry
In this lesson, we will learn how to find the area of a triangle without having to calculate its perpendicular height.
Sample Question Videos
Worksheet: 25 Questions • 6 Videos
is a triangle where , and the area is 480 cm2. Find the length of giving the answer to the nearest centimetre.
is an acute-angled triangle where , and the area is 315 cm2. Find , giving the answer to the nearest minute.
is a triangle where , , and the radius of the circumcircle is 22.4 cm. Find the area of the triangle giving the answer to one decimal place.