Question

What is the measure of angle B in the triangle below. WILL FAN AND MEDAL!

Answer 1

Where is diagram ???

Answer 2

the number on the far left is a 5 sorry for putting it in the line

Answer 3

Are you familiar with trigonometric ratios ????

Answer 4

no sir

Answer 5

okay
sin ratio is nothing but opposite / hypotenuse
cos ratio is adjacent / hypotenuse
tan is opposite / adjacent
Getting this ??

Answer 6

you now know about Tan(B)

so you can write tan(B) = opposite/adjacent

Answer 7

If it helps just in case while we are working this you slip up somewhere or something my answer choices are
a. 21 degrees
b. 22.6 degrees
c. 42.7 degrees
d. 67.4 degrees


and yes i get it

Answer 8

so we can use any ratio to find out angle B can you try for it ?

Answer 9

sure wait one sec

Answer 10

5/12 or 5/13 i dont know which one

Answer 11

which is opposite?
which is adjacent?

Answer 12

5 and 12 is opposite and adjacent but im waitinf gor suyogsom

Answer 13

but oyu know that opposite/adjacent = tan(B)

Answer 14

Any one is find just select trigonometric ratio correctly ....
So take 5/12 5 is opposite of angle B and 12 is adjacent of angle B
So we have to use tan ratio tan B = opposite / adjacent = 5 / 12 getting this ??

Answer 15

yes getting it

Answer 16

but how does 5/12 transfer to those degrees

Answer 17

So we got tan B = 5 / 12 take inverse now can you ?

Answer 18

which is 2.3

Answer 19

First simply 5/12 = --- ?

Answer 20

.42

Answer 21

sorry youve had to help me so much

Answer 22

correct so tanB= 0.42 we need to solve it for B so we have to get rid of tan so we take tan inverse on both sides so we get ----- ????

Answer 23

.42/tan im just going off what i already know about equations

Answer 24

We need to write it as tan^-1 tan B = tan^-1( 0.42)
So we remain with B = tan^-1( 0.42 ) getting this ????

Answer 25

getting it so how do we solve the right side so it equals some sort of degree?

Answer 26

You can use calculator to find out tan^-1( 0.42 ) can you try ??

Answer 27

yes wait one moment

Answer 28

22.78