tyrellgraham6
Answered

Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

HELP PLEASEEEEEEEE !!!

HELP PLEASEEEEEEEE class=

Sagot :

goyangi
DC = 16

Explanation:

ABD is a right triangle (Angle ADB is a right angle)

Using the Pythagoras Theorem,
AB^2 = AD^2 + BD^2
AB^2 = 9^2 + 12^2
AB^2 = 81 + 144
AB^2 = 225
AB = 15

In triangle ABD,
sin(Angle A) = BD/AB
sin(Angle A) = 12/15
Angle A = sin^(-1)[12/15]
Angle A ≈ 53.13 degrees

In triangle ABC,
cos(Angle A) = AB/AC
cos(53.13) = 15/AC
AC = 15/cos(53.13)
AC ≈ 25

DC = AC - AD = 25 - 9 = 16
We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.