Sec 2theta

Last updated on Feb 23,

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Algebra Examples Popular Problems. Take the inverse secant of both sides of the equation to extract from inside the secant. Simplify the right side. The exact value of is. Divide each term in by and simplify.

Sec 2theta

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In espionage movies, we see international spies with multiple passports, each claiming a different identity. However, we know that each of those passports represents the same person. The trigonometric identities act in a similar manner to multiple passports—there are many ways to represent the same trigonometric expression. Just as a spy will choose an Italian passport when traveling to Italy, we choose the identity that applies to the given scenario when solving a trigonometric equation. In this section, we will examine how to use the fundamental trigonometric identities, to verify new identities and to simplify trigonometric expressions. You are asked to solve problems involving trigonometric identities in WeBWorK in the assignments titled "Chapter 7.

Sec 2theta

Following table gives the double angle identities which can be used while solving the equations. You can also have sin 2theta, cos 2theta expressed in terms of tan theta as under. Double Angle Identities. Key Questions How do you use double angle identities to solve equations? Answer: As below. Explanation: Following table gives the double angle identities which can be used while solving the equations. How do you use a double angle identity to find the exact value of each expression? You would need an expression to work with.

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Trigonometric Identities are useful whenever trigonometric functions are involved in an expression or an equation.

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