Tag Archives: cotangent

Trigonometry – Trigonometric Identities – Example 6

By | October 1, 2016

Trigonometric Identities In this tutorial the students learn how to use trigonometric identities and properties of trigonometry to prove that trigonometric expressions are equal. Virginia Standards of Learning (SOL) T.5 Key Skills Trigonometric Identities 1/cos(x) = sec(x) 1/sin(x) = csc(x) tan(x) = sin(x)/cos(x) 1/tan(x) = cos(x)/sin(x) 1/tan(x) = cot(x) Pythagorean Identities sin²x + cos²x = 1 1… Read More »

Trigonometry – Cotangent Trigonometric Equation on an Interval

By | September 21, 2016

Cotangent Trigonometric Equation on an Interval In this tutorial students learn how to find all of the solutions to a trigonometric equation over a specified interval, [0,2π). The students also verify the solutions using the GRAPH, WINDOW and TRACE features of the TI-84C. Virginia Standards of Learning(SOL) T.8 1) Simplify and/or factor the equation if necessary. 2)… Read More »