Trig theta question

  • Thread starter Mejiera
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  • #1
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Homework Statement



I dont understand the step the math book took to convert sin(theta)/sin(theta)-cos(theta) to 1/sin(theta)-cos(theta)/sin(theta)

Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
1,384
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It just divided the whole expression by sin(theta).

sin(theta)/sin(theta) - cos(theta) = 1 - cos(theta). Divide that by sin(theta) and you get 1/sin(theta) - cos(theta)/sin(theta).

But in general 1 - cos(theta) does not equal 1/sin(theta) - cos(theta)/sin(theta).
 

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