12 سرا
using trigonometric identities to simplify each expression.
21-22.)cot x sec x


23-24.)sin x +cot x cos x


25-26.)sin B sec B + cos B csc B


27-28.)cos x sec x


29-30.)sec²x(1-sin²x)



pasagot po.ng Tama plz..kelangan Ku po yan bukas.. salamat
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