Trigonometric Identity Involving Secant And Tangent
Trigonometric Identity Involving Secant And Tangent
Trigonometric Identities: The trigonometric identities are equalities which are true for every value appearing on both sides of the equal sign An equation involving trigonometric ratios of an angle is called a trigonometric identity, if it is true for all values of the angle(s) involved. These identities are useful whenever expressions involving trigonometric ratios are to be simplified.
Trigonometric Identity Involving Secant And Tangent: The identity can be expressed as
Let us try to prove these identities and use it further to simplify the various trigonometric expressions
In Proof For The Identity: Let us now divide (1) by or, i.e., i.e., This is true for all A such that |  |
Illustration: Simplify the expression:
Solution: We will simplify the expression using trigonometric Identites
=
We have,
| Right Option : B | |||
| View Explanation | |||
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