Attention ODT math brain trust!

[Bear44]

Excellent! You guys got me thinking the right way and I found a calculator for it on line, then found an app that does the same thing on my phone. Knowing c and the angle of B tells me I'm 38.8 feet below the rod tip. Subtract the height of the rod tip above the water and I have actual depth.

Right Triangle Calculator

Right triangle calculator to compute side length, angle, height, area, and perimeter of a right triangle given any 2 values. It gives the calculation steps.

www.calculator.net

 

[LARGO9]

Measuring Lure Depth

This blog post will focus on a simple mechanical approach to lure depth measurement. This method uses a little math and a couple simple measurements.

trollmasterdepthcalculator.com

 

[Tony2X]

View attachment 3481213

I might have to pay this lil monkey a visit tonight....

 

[emptyMAGS]

Yeah, I laughed at that title, too. Anyway...

What is the formula to calculate depth if all you have is angle below horizontal and length of line? Trying figure out how to determine how deep my lures are running when I troll.

 

[mfoster]

Bear you overthinking again.

 

[TresMonos]

just ask the fish how deep he was when he took your lure

 

[Bear44]

Bear you overthinking again.

Always. It can be a real PITA.

 

[Gaffer1968]

Yeah, I laughed at that title, too. Anyway...

What is the formula to calculate depth if all you have is angle below horizontal and length of line? Trying figure out how to determine how deep my lures are running when I troll.

Sin^2(theta) + Cos^2(theta) - 2*a*b Cos(theta) = 1

where 'theta' is the angle and 'a' is baseline (adjacent) e and 'b' is height (opposite). I had to edit this from original after I looked it up. Wasn't sure about your particular question and whether your length of line was the length at the depth angle (which would be the hypotenuse 'c') or straight surface distance.

OR (easier) --- b = c * sin (theta)..... much simpler..

 

[41mag]

View attachment 3481213

I am not sure about that set of calculations…..several show variables to the power of ”0” ….. which would equal 0 no matter the variable, so…..
(yeah, overthinking). LOL

 

[Gaffer1968]

I am not sure about that set of calculations…..several show variables to the power of ”0” ….. which would equal 0 no matter the variable, so…..
(yeah, overthinking). LOL

Oh, I disagree.....the answer to that formula is most assuredly "42". :0)