X=-1 is the answer. Hope that helps!
U should get the app "photomath" it will help u out alot!!!
Answer:
i think its 18.59
Step-by-step explanation:
Yes it is true:
(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful
