Question

What is the formula for the area of a triangle?

a. a^2 + b^2 = c^2
b. A= 1/2acosB
c. A= 1/2bcsinA
d. a^2 = sin^2 + cos^2c​

Answer 1

`\Large \boxed{\mathrm{\bold{C} }}`

Explanation:

We can find the area of the triangle when two sides are given and the angle in between the two sides.

`\displaystyle A=\mathrm{(1)/(2) bc \cdot sinA}`

b and c are the sides and A is the angle in between b and c.

Answer 2

Answer: c. (1/2) bc sin A

Explanation:

You can find the area of a triangle using trigonometry if you know the lengths of two sides and the measure of the included angle using the following formula:

`A=(1)/(2)ab\sin C`