Which one is correct? The book doesn't explain this.ģ) Cos _ = 0.
Ptolemy’s identities, the sum and difference formulas for sine and cosine. Sine, tangent, cotangent, and cosecant are odd functions while cosine and secant are even functions. 2) You know that the tangent of is 1 2 1 2. Sine, cosine, secant, and cosecant have period 2 while tangent and cotangent have period.
so we will look at the Sine Function and then Inverse Sine to learn what it is all about. 4877 = 123)Ī is technically the closest in difference, but B is the closest without going over the number. As suggested by Jonas: 1) Draw a right triangle and label one of the (non 90 90 ) angles. And now for the details Sine, Cosine and Tangent are all based on a Right-Angled Triangle. Obviously since the sine of '19 degrees' is both before the actual sine of this answer on the sin chart and is actually the closest, it is the correct answers.Ģ) Find the value of Angle A where the adjacent side = 10 and the opposite side = 5Ī) 27 degrees = Tan. For instanceġ) Find angle 'B' with hypotenuse '9' and opposite '3' to the nearest degree.Ī) 19 degrees =. The questions include the phrase: 'to the nearest degree'. I have a chart that compares degrees with their cos, sin, and tan values.
I can't quite figure out what my textbook is asking of me.
