# pre calculus Definition and Topics - 19 Discussions

In mathematics education, precalculus or college algebra is a course, or a set of courses, that includes algebra and trigonometry at a level which is designed to prepare students for the study of calculus. Schools often distinguish between algebra and trigonometry as two separate parts of the coursework.

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1. ### First time Pre-Calc student, HW Help with Goose

150 km tan(35)=150/x Hyp=316.58 I know this isn't right where did I go wrong or did I even start correctly

18. ### Sin^4Ө =3/8-3/8cos(2Ө) Prove the following trigonometric identity

Homework Statement Prove the following trigonometric identity. The question is sin^4Ө =3/8-3/8cos(2Ө) Homework Equations I think I'm supposed to use the power reducing formulas for trigonometric identities which are sin^2(u)= (1- cos(2u))/2 cos^2(u)=(1+cos(2u))/2 *Let u represent any...
19. ### Implicit Differentiation: two different answers

Homework Statement with answers given: Homework Equations use implicit differentiation The Attempt at a Solution I always get this answer but not the second one PLs explain the second answer for I am very desperate. Thank You