Q 1: Show that (sin + cos )^{2} + (sin  cos )^{2} = 2 Answer:

Q 2: Show that (sin + cos )^{2} = 1 + 2 sin cos Answer:

Q 3: Show that cot + tan = sec . cosec for 0^{0} < < 90^{0} Answer:

Q 4: Show that tan^{2} + tan^{4} = sec^{4}  sec^{2} Answer:

Q 5: Prove that sec (1  sin )(sec + tan ) = 1 Answer:

Q 6: Show that sec^{2} + cosec^{2} = sec^{2} cosec^{2} Answer:

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Question 8: This question is available to subscribers only!

