Prove that cos 1 sin 1
- prove that cos a 1 sin a 1 sin a cos a 2 sin a
- prove that sin cos 1 sin cos 1 1 sec 10
- prove that cos sin 1 cos cot cos sin 1 ec
- prove that cos 1 sin 2 sec 1 sin cos a a a
- prove that cos sin 1 cos sin 1 cosec cot
- prove that cos cos 1 sin sin 1 tan cot 1
- prove that cos tan 1 cot sin 1 x ) x
- prove that sin cos 1 sin cos 1 1 sec tan
- prove that cos 1 sin 1 sin cos 2sec
- prove that cos 1 sin 1 sin cos
