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tamaranim1 [39]
3 years ago
8

PLEASE HELP ME FIND THE AREA OF THIS TRIANGLE

Mathematics
2 answers:
Natasha2012 [34]3 years ago
7 0

Answer:

=49.15 cm²

Step-by-step explanation:

To find the area of the triangle we use the sine formula

A= 1/2ab Sin∅

where A is the area a and b are the lengths of two sides that intersect at a point and ∅ is the angle between them.

a=10 cm

b= 12 cm

∅=55°

A= 1/2×10×12×Sin 55

=49.15 cm²

Nutka1998 [239]3 years ago
4 0

ANSWER

Area =49.1 {cm}^{2}

EXPLANATION

The area of triangle given included angle and length of two sides can be calculated using the formula:

Area =  \frac{1}{2} ab  \sin(C)

Where C=55° is the included angle and a=12 cm , b=10cm are the known sides.

We plug in these values into the formula to get,

Area =  \frac{1}{2} \times 12 \times 10 \sin(55 \degree)

Area =49 .14912266

Rounding to the nearest tenth, the area is

Area =49.1 {cm}^{2}

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