Trigonometric Proof Proving trigonometric identities You can use trigonometric identities you already know to prove new identities Make sure you know the?simple trigonometric identities?and?further...
Strategy for Further Trigonometric Equations How to approach solving harder trig equations You can solve harder trig equations, such as those involving?reciprocal?and?inverse?functions in a variety...
R addition formulae Rcos Rsin etc How can I simplify expressions like?a?sin?x?±?b?cos?x? or?a?cos?x?±?b?sin?x? If?a?and?b?are positive constants, then a?sin?x?+?bcos?x?can be rewritten as?R?sin?(x?...
Double Angle Formulae What are the double angle formulae? The?double angle formulae?are derived from the 'A+B' versions of the?compound angle formulae: Exam Tip The double angle formulae are...
Compound Angle Formulae What are the compound angle formulae? There are six?compound angle formulae?(also known as?addition formulae), two each for?sin,?cos?and?tan: For?sin?the +/- sign on the lef...
Inverse Trig Functions What are arcsin, arccos and arctan? These functions are the?inverse functions?of?sin,?cos?and?tan sin?(arcsin?x)?=?x cos?(arccos?x)?=?x tan?(arctan?x)?=?x The domains of?sin,...
Trigonometry - Further Identities What identities do I need to know with secant, cosecant, and cotangent? There are two identities with?sec,?cosec?and?cot?that you need to know and be able to use: ...
Reciprocal Trig Functions - Graphs What does the graph of the?sec?look like? The graph of?y?=?secx?looks like this: y-axis?is a?line of symmetry has?period?(ie repeats every)?360°?or?2π?radians ver...
前幾天UCAS發布了2022-23年申請季截止10月15日的申請數據報告！UCAS申請系統有兩輪申請截止日期，第一輪是在10月15日截止，英國其他院校在此時間節點后也依然接受申請材料。 根據最新的UCAS數據，我們發現了以下“...
