Trigonometry

[weary marten]

Trigonometry

[true echo]

Isn’t cos (phi) y/z ??

Oh wait it’s asking about theta

[bleak cloak]

yea haha

[true echo]

that’s very strange everything seems correct in terms of theta

Maybe it’s the format

[bleak cloak]

yes thats what i was thinking aswell

[true echo]

Of your answer

Perhaps check how to write the fractions in the answer section

[bleak cloak]

i checked and im formatting it correct

[true echo]

Could you show me what it says

If phi is 2theta does that mean you have to scale the lengths ?

[bleak cloak]

maybe?

[true echo]

This is very strange unfortunately it has also struck my head too, but perhaps you need to scale

Because it might be asking in terms of phi and not the angle theta in the diagram

how is Y not defined though or z

Y is defined as the opposite of theta

And x is adjacent to theta

[bleak cloak]

okay thank you and im honestly not sure

[true echo]

Try ping someone else for this problem

Don’t give up on it

[mental raven]

If you consider the triangle as a right triangle you find that theta = 70 degrees, then you can find its sin, cos, and tan. To transform it into fractions you could use a GDC and approximating you'll find: x=171, y=470, z=500

Therefore, your answer would be cos=171/500

sin=470/500

and tan = 470/171

I am not 100% sure of this answer but believe this helps you

[bleak cloak]

im so sorry but that answer is showing as incorrect

i can show a sample problem i did like 3 months ago but i completly forgot how i solved it