How do you find this integral?

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SUMMARY

The integral of 1/(1 + cos(x)) requires the application of trigonometric identities, specifically the relationship between cos(x) and cos(x/2). The antiderivative can be simplified using the half-angle identity, leading to a more manageable form for integration. This approach is essential for solving the integral effectively.

PREREQUISITES
  • Understanding of trigonometric identities, particularly half-angle formulas.
  • Knowledge of antiderivatives and integration techniques.
  • Familiarity with the concept of definite and indefinite integrals.
  • Basic calculus skills, including manipulation of algebraic expressions.
NEXT STEPS
  • Study the half-angle identities in trigonometry.
  • Learn techniques for finding antiderivatives of trigonometric functions.
  • Practice solving integrals involving rational functions of trigonometric expressions.
  • Explore the application of definite integrals in calculus.
USEFUL FOR

Students studying calculus, particularly those focusing on integration techniques and trigonometric functions. This discussion is beneficial for anyone looking to enhance their problem-solving skills in integral calculus.

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Homework Statement


the problem is

Find the antiderivative of 1/(1 + cos(x))

Homework Equations





The Attempt at a Solution



I think it requires a trick, but I can't figure it out.
 
Last edited:
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is it a definite integral?
 
Use the relation between cos(x/2)and cos(x).

ehild
 

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