I Should have made it clearer sorry. I have not made an attempt. I am stumped as to how i use the compound identity rules for this problem. I have not had any similar problems in my uni tutorials. I am obviously missing a key point but cant put my finger on it.Hello. Please show one of your attempts, so that tutors may see what you're trying. Thank you!
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It may be helpful if you tell us why you think these should be equal.I need to show that h below
View attachment 33966
can be re written as
View attachment 33967
where h=height and t=seconds
I am really struggling to get my head around this one. I am aware i need to use the compound identity rules but still cannot get closer to an answer.
any help would be appreciated
The question i have been given says "show that h can be re written as". i am aware it is possible as other students in my cohort have completed it i just havent been able to get moving on itIt may be helpful if you tell us why you think these should be equal.
In particular, when I graph them, they are not the same (assuming I did it all correctly), so I think there's an error somewhere. Check your copying, among other things.
Google cos(3x) and tell us what you found that can be used for this problem.I need to show that h below
View attachment 33966
can be re written as
View attachment 33967
where h=height and t=seconds
I am really struggling to get my head around this one. I am aware i need to use the compound identity rules but still cannot get closer to an answer.
any help would be appreciated
Let's be a bit tougher. Let the student derive the formula for cos(3x) by noting that cos(3x) = cos(2x + x) =.....Google cos(3x) and tell us what you found that can be used for this problem.
So, when you said, "I need to show", you were paraphrasing an assignment you were given (and not, for example, trying to reconcile an answer you got with one you were given)?The question i have been given says "show that h can be re written as". i am aware it is possible as other students in my cohort have completed it i just havent been able to get moving on it