Plis help me first one to reply gets brainless

Describe the relationship between the angles of similar triangles and the sides of similar triangles

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

Which equation can be solved to find one of the missing side lengths in the triangle? cos(60o) = cos(60o) = cos(60o) = cos(60o) = mark this and return