Question

Write the ratios for sin A and cos A.

Answer 1

@j814wong can u plz help?

Answer 2

Those mc0153-155 pictures are the answer choices I presume.
The answer is Sin A=15/17 and Cos A=8/17.

Use the SOH CAH TOA mnemonic device to help remember. Sin=Opposite/Hypotenuse and Cos=Adjacent/Hypotenuse and Tan=Opposite/Adjacent

Answer 3

yes they are the answers

Answer 4

nd idk how to do what u told me to do

Answer 5

When the question is asking for the ratio of Sin A, you take the angle A and, based on SOH from the mnemonic device I showed you, find the side opposite from Angle A and the hypotenuse. The side opposite(O) Angle A is side CB which is 15 long. That'll be the numerator of the ratio as S=O/H as per the mnemonic device/rule. The hypotenuse(H) is 17 so put that together and get Sin A=15/17.

Sin of Angle X means setting the side opposite of the angle as the the numerator (O value) and the hypotenuse as teh denominator (H value).

With this knowledge and udnerstanding, you can find the Cos ratio of any angle based on the Sin=Oppo/Hypo Cos=Adja/Hypo Tan=Oppo/Adja rule aka SOH CAH TOA

Answer 6

EXTRA STUFF NOT specifically for this question: This rule can be used to find Sin, Cos, or Tan ratios of any angle as well as many othe typoes of questions involving Sin, Cos and Tan. For example, many other uses involve finding a missing angle based on given sides simply by plugging in values into the SOH CAH TOA rule so its very important to remember.

Answer 7

so i fi do sin (15/17) i will get my answer

Answer 8

Sin A = 15/17. Don't write sin (15/17) becauses that a very differnet thing.

But on a DIFFERENT note, sin−1 aka Arcskin can be used to find a missing angle. Let's say you know the opposite side and hypotenuse in regards to the missing angle, by plugging it in to sin−1(15/17), you can get the angle of the missing angle.

Answer 9

On tests, these That type of question and teh one you showed asked first can probably be seen on that same test be it SAT or some standardized test so its crucial to understand how to use SOH CAH TOA.

Answer 10

on my calc it automatically goes sin(

Answer 11

Huh. What calculator do you have?

Answer 12

For your first question, you don't ened a calculator

Answer 13

ti-84

Answer 14

is it B

Answer 15

It's mc0152.jpg

Answer 16

So A

Answer 17

Yeah