Asked by Andrea
How would you show that one trigonometric expression is equal to another? I’m not exactly sure how to start.
Answers
Answered by
Steve
start by using the most basic identities:
tanx=sinx/cosx
sin^2x + cos^2x = 1
by dividing by cos^2x you get
tan^2x+1 = sec^2x
divide by sin^2x and you get
1+cot^2x = csc^2x
There should be a section in your text covering trig identities. It will start out with simple ones like these and move on to more complicated ones.
tanx=sinx/cosx
sin^2x + cos^2x = 1
by dividing by cos^2x you get
tan^2x+1 = sec^2x
divide by sin^2x and you get
1+cot^2x = csc^2x
There should be a section in your text covering trig identities. It will start out with simple ones like these and move on to more complicated ones.
Answered by
Andrea
Okay, thank you Steve!
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