How to find sec(theta) when sin(theta) and tan(theta) are given

  • Thread starter Thread starter Alice Shield
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Homework Help Overview

The discussion revolves around finding the value of sec(theta) given the values of sin(theta) and tan(theta). The subject area pertains to trigonometric identities and relationships.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • The original poster expresses uncertainty about which equations to use and whether their calculator input was correct. Participants inquire about the definition of sec(theta) and its relationship to cos(theta) and tan(theta>.

Discussion Status

The discussion is in an early stage, with participants seeking clarification on definitions and relationships between trigonometric functions. Some guidance has been offered regarding the definition of sec(theta>.

Contextual Notes

The original poster is new to the forum and is still learning how to navigate the discussion format. There is an emphasis on adhering to forum guidelines.

Alice Shield
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Homework Statement


Sin theta = 5/13
Tan theta = -5/12

Homework Equations


I don't know what equation to use

The Attempt at a Solution


I'm not sure if I did it right on the calculator
 
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Hello Alice, :welcome:

Not the way things go, here in PF : see guidelines

To get started: do you know what ##\sec\theta## is ?
 
BvU said:
Hello Alice, :welcome:

Not the way things go, here in PF : see guidelines

To get started: do you know what ##\sec\theta## is ?
Sorry it's my first time using this site and I'm still learning how to get around here.
Sec theta is 1/ cos theta?
 
Alice Shield said:
Sorry it's my first time using this site and I'm still learning how to get around here.
Sec theta is 1/ cos theta?

Okay, and ##\tan \theta##?
 

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