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Triangle Area using Trigonometry

Last updated 10 months ago
8 questions
4
Find each of the following, then find the area of the triangle using the formula A=\frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.

AC=_______ u
BC=_______ u
BD=_______ u
Area \triangle ABD=_______ u^2
4
Find each of the following, then find the area of the triangle using the formula \frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.
AC=_______ u
CD=_______ u
BD=_______ u
Area \triangle ABD=_______ u^2
4
Find each of the following, then find the area of the triangle using the formula \frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.
AC=_______ u
CD=_______ u
BD=_______ u
Area \triangle ABD=_______ u^2
4
Find each of the following, then find the area of the triangle using the formula \frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.
(In the picture, \angleBAC is 36\degree.)
AC=_______ u
CD=_______ u
BD=_______ u
Area \triangle ABD=_______ u^2
5
Find each of the following, then find the area of the triangle using the formula \frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.
AC=_______ u
BC=_______ u
CD=_______ u
BD=_______ U
Area \triangle ABD=_______ u^2
5
Find each of the following, then find the area of the triangle using the formula \frac{1}{2}bh. Round side lengths to the nearest tenth. Use your rounded values to calculate the area, also rounded to the nearest tenth.
(In the picture, m\angle{ADC}=69\degree.)
AC=_______ u
BC=_______ u
CD=_______ u
BD=_______ u
Area \triangle ABD=_______ u^2
2
Find the height and area of the equilateral triangle below. Leave your answers in simplest radical form.
height=_______ cm
Area=_______cm^2
2
Find the height and area of the equilateral triangle below. Round your answers to the nearest tenth.

base=_______ cm
Area=_______cm^2