Question

Help! Please! Fan and Medal!

http://i.imgur.com/2x1wc5A.png

Answer 1

Ok I think you can do this using geometry. Sin of an angle and cos of an angle = 90 degrees.

Answer 2

Think they're like complementary angles or along those lines.

Answer 3

So the angle 8x-18 and the angle 5x+4 will equal 90 degrees because of the relationship between sine and cosine.

Answer 4

Here's an example: sin30 = 0.5 and cos60 = 0.5. This is because the angles 30 and 60 are complementary. Therefore they will yield the same value. Do you get that?

Answer 5

Yes, I do

Answer 6

@anthoyym So is it thiss : \[(8x - 18) + (5x + 4) = 90 \]
\[x = 8\]