Question

proove this plz URGENT!!! i will mark u brainliest...​

Answer 1

Here's your answer,.... in the attachment.

Answer 2

Refer to attachment:

Some identities to be remembered

• sin²∅+cos²∅ = 1.
• sec²∅ - tan²∅ = 1.
• csc²∅ - cot²∅ = 1.