Q 1: Prove:
csc x . sin x = 1 Answer:

Q 2: Prove:
cot x + tan x = sec x csc x Answer:

Q 3: Prove:
sin^{2}x + cos^{2}x = 1 Answer:

Q 4: Prove:
1  cos(2x) = 2sin^{2}(x) Answer:

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Question 6: This question is available to subscribers only!

