A triangle has sides of length 12 cm and 21 cm with an included angle of 56 degrees. Find the expression for the height to the 21 cm side (not an approximation).The height is _Using this expression for the height (not an approximation), calculate the area. The area of this triangle _The units are

• Height= 21 sin56°

• The area of this triangle is approximately equal to 104 squared centimeters.

• The units are centimeter (for height) and squared centimeter (for the area)

Explanation:

The sides lengths of the triangle are 12 cm and 21 cm respectively.

The included angle (angle between the two given sides) is 56 degrees.

The diagram representing this is attached below.

Using trigonometric ratios, the expression for the height to the 21 cm side is:

We know that the area of a triangle is calculated using the formula:

• The area of this triangle is approximately equal to 104 squared centimeters.

• The units are centimeter (for height) and squared centimeter (for the area).

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