Solving an Angle with Trigonometry

Click For Summary
The angle in question is determined to be 30 degrees based on the relationship with a 45-degree angle. The user is calculating components using trigonometric functions, specifically questioning if 2cos30 equals Ay. There is confusion about how to derive the perpendicular component, leading to a suggestion that the tangent might be represented as 2sin30. Clarification and assistance with these trigonometric calculations are requested.
klm
Messages
165
Reaction score
0
edit- nevermind i got it
okay what i figured so far is that the angle i am looking for is 30 degrees, b/c that bottom angle is 45, so the other angle total should be 45. and then i subtracted 15 and got 30. so i am thinking that the component that is suppose to be tangent would be 2cos30=Ay ...would that be correct?
and i have no idea how i am suppose to get the perpendicular one. any help would be greatly appreciated!

Homework Statement


Homework Equations


The Attempt at a Solution

 
Last edited:
Physics news on Phys.org
so really the tangent would be 2sin30 ?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

Similar threads

Replies
9
Views
2K
Replies
6
Views
2K
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
21
Views
3K
Replies
1
Views
1K
Replies
2
Views
1K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
14
Views
792
  • · Replies 7 ·
Replies
7
Views
3K