Solve a quadratic with trigonometric values in degrees

01282020, 05:51 AM
(This post was last modified: 01282020 05:52 AM by Mark Hardman.)
Post: #8




RE: Solve a quadratic with trigonometric values in degrees
(01282020 05:16 AM)Carsen Wrote: A lot of work huh! Most of that work could be eliminated if the OP recognized that cos(30) = √3/2. From there, it is only a minor mental effort to come up with d = 2500/(3*9.81). Why on earth would you need a CAS to solve that? IMO, this is an example of the dangers of symbolic calculators in the classroom. I know... "OK, Boomer"... Ceci n'est pas une signature. 

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