help me with math please

[tawdry glacier]

please help me i struggle very much with this

[azure dust]

You could use sine and cosine laws in a right angled triangle. Keep in mind that the hypothenuse is the same in both laws.

[tawdry glacier]

i see

can you please tell me which asnwer choice is correct

[azure dust]

I could, but i won't. You'll have to figure it out yourself. Otherwise you won't have learned anything.

For the second part, keep in mind that two parallel lines are crossed by a third one. You probably have seen what this means for the angles.

[tawdry glacier]

i dont understand anything your saying i tried everything but i am really really slow and cant comprehend gemotry yet and i need this question done please just make my day a little bit easier and answer it

[lime rivet]

Some things to note: given what we are told about the triangle (that sin(y) = cos(x)) we can make the observation that these triangles are similar

We can re-draw the smaller triangle to see that sin(y) and cos(x) represent the same sides relative of the pair, and since they are equal than they must be similar

This is the key to the first half of the question. The second half is understanding notation