Exponents in Trigonometric Expressions

Trigonometry equalities, inequalities and expressions - sin, cos, tan, cot

Exponents in Trigonometric Expressions

Postby Guest » Sun Mar 10, 2024 1:03 pm


I'm seeking advice on interpreting exponents in trigonometric expressions, specifically for [tex]cos(x+1)^2[/tex]. Should the exponent apply to the whole function as [tex](cos(x+1))^2[/tex], or only to the argument, implying [tex]cos((x+1)^2)[/tex]? This has become a point of confusion in a mathematical context, particularly with trigonometric functions. Any clarification or reference to standard mathematical conventions would be highly appreciated.

Thank you!

Re: Exponents in Trigonometric Expressions

Postby Guest » Wed Mar 20, 2024 7:31 am

When dealing with expressions like cos(x+1)^2, the exponent applies to the entire function, not just to the argument. Therefore, it should be interpreted as (cos(x+1))^2.

This means that you first evaluate the expression inside the parentheses (x+1), then take the cosine of that result, and finally square the cosine value.

This interpretation follows the standard mathematical convention for order of operations, where exponentiation takes precedence over other operations. However, to avoid ambiguity, it's always a good practice to use parentheses when expressions involve multiple operations or functions.

If you need further clarification or want to delve deeper into this topic, referring to trigonometry textbooks, academic or online sources like mathematicsassignmenthelp.com would be beneficial.

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