There are only two hard things in computer science: cache invalidation, naming things, and offbyone errors
Campbell Ritchie wrote:Is she really supposed to evaluate sinθ²? Not sin²θ? Since sin(π ÷ 3) is √3 ÷ 2, it is really easy to work out its square: ¾.
Neither degrees nor radians have dimensions; does each even have a square at all?
sin(θ²)Ryan McGuire wrote:. . . What's the operator precedence? Does sinθ² equal (sinθ)² or sin(θ²)? . . .
frosenberger wrote: We were asked to compute sin (θ^2).
I was taught that as sin²θ.Mike Simmons wrote:. . . more common to see formulas using (sin (θ))^2 . . .
There are three kinds of actuaries: those who can count, and those who can't.
Piet Souris wrote:I really don't understand the confusion. If theta is given, then we have no trouble understanding 2 theta, 3 theta, pi theta,... But when we have theta * theta, then it gets confusing?
There are three kinds of actuaries: those who can count, and those who can't.
Campbell Ritchie wrote:Is she really supposed to evaluate sinθ²?
Campbell Ritchie wrote:Neither degrees nor radians have dimensions; does each even have a square at all?
There are only two hard things in computer science: cache invalidation, naming things, and offbyone errors
Campbell Ritchie wrote:
I was taught that as sin²θ.Mike Simmons wrote:. . . more common to see formulas using (sin (θ))^2 . . .
There are only two hard things in computer science: cache invalidation, naming things, and offbyone errors
Unfortunately, I know the code for ² off by heart: ² See this old post.Mike Simmons wrote:. . . I was too lazy to look up more specialized character codes.
fred rosenberger wrote:I know that pi/3 = 60 degrees.
Being persecuted doesn't in any way prove your righteousness or your beliefs. Many people get persecuted because they are repugnant or annoying. Or just because they can be.
Tim Holloway wrote:
fred rosenberger wrote:I know that pi/3 = 60 degrees.
Then you know wrong. Pi is 3.141592... and is a dimensionless quantity. divide that by 3 (which is also dimensionless) and you get a value slightly larger than 1. Which is a dimensionless value as well.
fred rosenberger wrote:i'm probably going to ask the math teacher, too. I'm sure they hate parents like me.
It probably is a 100% contrived example meant to show the difference between (sin theta)^2 and sin (theta^2)...but it bugs me when I can't see why stuff doesn't work.
Ryan McGuire wrote:Fred, any update?
There are only two hard things in computer science: cache invalidation, naming things, and offbyone errors
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