Combining & Transforming Trig Functions - Help Needed

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The discussion focuses on the need for clearer guidance on combining and transforming trigonometric functions, as the original poster finds their textbook vague. They specifically seek rules for adding, subtracting, multiplying, and dividing trig functions, noting the importance of having the same period for sinusoidal functions. The mention of the period being 2π raises questions about its application and reasoning. Respondents emphasize that the topic is central to trigonometry and request more specific questions for better assistance. Overall, the thread highlights a common struggle with understanding foundational trigonometric concepts.
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Trig Fuctions help! please

hi everyone,

my Trig textbook, is really vague and I'm not sure where i could find better information.

Basically, I'm not sure how to add, subtract, multiply, or divide trig functions. My text siad that to make a sinusoid the periods must be the same, and that the period is always 2 pi...? My book didn't even attempt to sauggest why--I'd really like to know what THE RULES FOR COMBINING AND TRANSFORMING TRIG FUNCTIONS ARE.

Thankyou to anyone who can send me in the right direction.
 
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That's really a vague question. The rules for combining and transforming trig functions is the whole subject of 'trigonometry'. Can you be more specific?
 

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