Question

Write as an algebraic expression in x:
cos(arcsin(5/13))

Answer 1

draw a triangle with opposite side 5 and hypotenuse 13
find the other leg via pythagoras
that is all

Answer 2

the other leg is 13.928?

Answer 3

a^2+5^2=13^2

Answer 4

yeah, so b=13.928?

Answer 5

Then what?

Answer 6

what is the value of b^2 ?

Answer 7

194

Answer 8

oh no

Answer 9

169-25=?

Answer 10

the other leg is less than the hypotenuse

Answer 11

b^2+ 25 = 169
b^2 = 169-25

Answer 12

144

Answer 13

so
b=?

Answer 14

12

Answer 15

then what?

Answer 16

what next?

Answer 17

I don't know. That's why I'm asking.

Answer 18

@satellite73 could u please continue

Answer 19

\[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\]

cos = ?

Answer 20

12/13

Answer 21

@Nnesha

Answer 22

:-) yes

Answer 23

But what do I do with that?

Answer 24

put some jam on it and then eat with c (chocolate ) :-)
that's it !!! :-)

Answer 25

but the answer in my calculator is different from my answer (again)!

Answer 26

;-; what's your answer :?

Answer 27

cos(cos(pi/2-12/13))

Answer 28

what?

Answer 29

\(\color{blue}{\text{Originally Posted by}}\) @AEB047
but the answer in my calculator is different from my answer (again)!
\(\color{blue}{\text{End of Quote}}\)
what u got ?

Answer 30

sin(x)=cos(pi/2-x)

Answer 31

.9230769231 on calculator
.999870225 by me

Answer 32

0.92307 =12/13

Answer 33

:)

Answer 34

It's the same if I put in (cos(arcsin(5/13))!

Answer 35

All the best

Answer 36

https://www.google.com/search?q=google&oq=google+&aqs=chrome..69i57j69i60l3j0j69i65.1209j0j9&sourceid=chrome&es_sm=93&ie=UTF-8#q=google+calculator use this calc

Answer 37

http://prntscr.com/76usl3

Answer 38

why do you need in decimal form ?
keep it as fraction

Answer 39

Oh, so I put in 5/13 into the cos(arcsin but 12/13 into my equation.

Answer 40

what is ur question???

Answer 41

cos(arcsin(5/13)) = 12/13

Answer 42

arcsin is a 5/13

Answer 43

Ohhhhh!!! I think I get it now! Thanks!

Answer 44

:)

Answer 45

My answer is just 12/13!

Answer 46

glad :-)

Answer 47

yeah