[fullwidth background_color=”” background_image=”” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ background_repeat=”no-repeat” background_position=”left top” video_url=”” video_aspect_ratio=”16:9″ video_webm=”” video_mp4=”” video_ogv=”” video_preview_image=”” overlay_color=”” overlay_opacity=”0.5″ video_mute=”yes” video_loop=”yes” fade=”no” border_size=”0px” border_color=”” border_style=”” padding_top=”20″ padding_bottom=”20″ padding_left=”0″ padding_right=”0″ hundred_percent=”no” equal_height_columns=”no” hide_on_mobile=”no” menu_anchor=”” class=”” id=””][fusion_text]

Establish the sine, cosine and area rules for any triangle and solve related problems (VCMMG367)

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LO: To utilise Heron’s Formula to find the area of non-right angled triangles.

Know:

how to multiply the 3 sides of a triangle.
how to square root a number using digital technologies.

Understand:

That Heron’s formula can be utilised to find the area of non-right angled triangles.

Do:

I can utilise Heron’s Formula to find the area of non-right angled triangles.

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Heron’s Formula

Finding the area of a right-angled triangle is pretty simple. You just need to multiply the base of the triangle by the height and divide the answer by two.

However, with a non-right angled triangle, this is a little bit trickier.

The first step is to find out the value of “S“.

S is basically the perimeter of the triangle divided by two.

Once you know the “S” value, you just have to just apply Heron’s Formula which is the square root of S multiplied by S minus side “A”, S minus side “B” and S minus side “C”.

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Interactives

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Heron’s Formula (10A)

Establish the sine, cosine and area rules for any triangle and solve related problems (VCMMG367)

LO: To utilise Heron’s Formula to find the area of non-right angled triangles.

Know:

how to multiply the 3 sides of a triangle.

how to square root a number using digital technologies.