Your calculator will give you an answer of around 55°, but that’s just one out of infinitely many. You know from equation 22 that sin(180° − x) = sin x, and since 180° − 55° = 125°, sin 125° = sin 55. But all the trig functions are periodic, repeating every 360...
When working with trig functions, especially those having a phase shift, it may be easier *not* to use the graphing calculator.You can use the Mathway widget below to practice finding the amplitude, period, and phase shift. Try the entered exercise, or type in your own exercise. Then ...
without using a calculator. How can one find the degree of freedom in a Chi-square test? Give the domain of the square root of (x - 3). How do you simplify, ln(e) + lnAB? Given two similar triangles, one with 3 values and the other with 2 values, neither having a degree...
Nicholas, I think that the students & tutors should recognize the exactness (involving square root of 3) of the tangent value, and therefore should be able to use a reference triangle of the 30-60-90 type, rather than resorting to using calculator's arctangent function to get the angle (...
Step 4Solve using your calculator and your skills withAlgebra. Examples Let’s look at a few more examples: Example: find the height of the plane. We know the distance to the plane is 1000 And the angle is 60° What is the plane's height?
Establishing identities using the double-angle formulas is performed using the same steps we used to derive the sum and difference formulas. Choose the more complicated side of the equation and rewrite it until it matches the other side. Using the Double-Angle Formulas to Verify an Identity...
If the coefficient matrix is invertible, the calculator will present the solution matrix; if the coefficient matrix is not invertible, the calculator will present an error message. Using a Calculator to Solve a System of Equations with Matrix Inverses Solve the system of equations with matrix inver...