Question

trigonometry,

How would you solve part (d) ?

https://www.dropbox.com/s/sofy29c60fbs6le/Screenshot%202016-02-28%2018.46.06.png?dl=0

Answer 1

@hartnn do u know about this ?

Answer 2

x = tan y

Answer 3

so what is sin y?

Answer 4

I get stuck at sin(y) = sqrt(1 - cos^2(y))

Answer 5

start from x = tan y = sin y/cos y = sin y/ sqrt(1-sin^2 y)

x = sin y/ sqrt(1-sin^2 y)
try to isolate sin y here

thats just one way..there can be oter ways too

Answer 6

you can also use triangle method

Answer 7

hmm how would you use the triangle method for this ?

Answer 8

x = tan y

Answer 9

sqrt(x^2 + 1 ) is the hypotenuse

Answer 10

so sin(y) is equal to x/sqrt(x^1 +1) and I am done ?

Answer 11

x^2+1**

yes!

Answer 12

^2 *

Answer 13

hmm I see :D Thanks : -)

Answer 14

welcome ^_^