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In this lesson, we will learn how to find the area of a triangle without having to calculate its perpendicular height.

Q1:

An isosceles triangle has a side length of 49 cm and a base angle of 4 4 β . Find the area of the triangle giving the answer to three decimal places.

Q2:

π π π is a triangle where π β π = 3 5 β , π β π = 6 2 β and the area is 480 cm^{2}. Find the length of π π giving the answer to the nearest centimeter.

Q3:

is an acute triangle where , and the area is 315 cm. Find , giving the answer to the nearest minute.

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