So I am going to post a few questions that I got wrong on an assignment (I am retaking said assignment with different questions after I figure these out)! So, if anyone could help explain these to me it would be extremely appreciated and helpful.

1. Use basic identities to simplify the expression
sinΘ cosΘ secΘ cscΘ
My answer choices are
A. sec^2Θ
B. 1
C. tan^2Θ
2. Find sin θ if cot θ = - 4 and cos θ

Question

So I am going to post a few questions that I got wrong on an assignment (I am retaking said assignment with different questions after I figure these out)! So, if anyone could help explain these to me it would be extremely appreciated and helpful.

1. Use basic identities to simplify the expression
sinΘ cosΘ secΘ cscΘ  
My answer choices are 
     A. sec^2Θ
     B. 1
     C. tan^2Θ 
2. Find sin θ if cot θ = - 4 and cos θ < 0.
     A.-17
     B. rad17/17
     C.-1/4
3.Use basic identities to simplify the expression.
1/cot^2Θ + secΘcosΘ
     A. csc^2Θ
     B. 1
     C. sec^2Θ

supernova_sonntag · Answer

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ajspeller · Answer

sec = 1/cos csc = 1/sin tan = sin/cos cot = cos/sin I also have some short tutorials that should help you to better understand trigonometric identities. https://www.youtube.com/playlist?list=PLsX0tNIJwRTzWEMW5fo6EtkKNjTjo5Nny I hope this helps.

3mar · Answer

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