In prepping my DD12 for the new SAT, I spent 10 minutes explaining sin/cos/tan and the SOHCAHTOA acronym to remember how to calculate them. In all of the practice tests and the actual delivery, she hasn't run into anything trig-related she couldn't handle with these rules. Nothing else she saw hasn't been covered in her coursework through 1/4 of a year of Honors Geometry.
We're looking at Green or PrepScholar, depending on the results of the October test - she's intent on qualifying for CTY SET on the January test before turning 13.
My older daughter just took the practice tests, which everyone should, and used Kahn to do some diagnostics and brushing up (she's in her 2nd year of Calc, so Algebra I/Geometry/Trig was a bit rusty).
Last edited by Cranberry; 10/18/16 06:53 AM.
