Question

Find the area of triangle ABC. The figure is not drawn to scale.


https://nnds-li.brainhoney.com/Resource/19791663,8AD/Assets/assessmentimages/geo%20part%202%20u3l2%202.jpg
22.73 cm2
26.06 cm2
24.95 cm2
28.00 cm2
@welshfella

Answer 1

@welshfella

Answer 2

@amistre64

Answer 3

gonna have to work some trig arent you

Answer 4

what are your thoughts?

Answer 5

im not that good at cosine

Answer 6

@amistre64

Answer 7

you are gonna have to work at it tho .... and its sin youll most like use

Answer 8

how do we define the sin of an angle?

Answer 9

idk

Answer 10

well, when you get the gumption up to find it, ill try to help you apply it.

Answer 11

the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right triangle) to the hypotenuse. @amistre64

Answer 12

so i would have to find the missing side then i know hiow to find the area

Answer 13

that sounds like what we might need

now, lets see how this applies

Answer 14

we only need to find the height, and we can do that with the sin function and the side of the triangle thats given

Answer 15

the missing side ... i dont know herons formula so i wouldnt know that approach

Answer 16

so how would you find the height

Answer 17

we have a base, we need a height .... accordig to the definition of sin ...

sin(63) = h/7

so h = 7 sin(63)

Answer 18

Which trig function relates the opposite leg to the hypotenuse?

Answer 19

Area formula is A=1/2*a*b