Prove that sin cos 1 sin
- prove that 1 sin cos cos 1 sin 2sec
- prove that 1 sin a cos a 1 sin a cos a tan a 2
- prove that sin 1 cos 1 cos sin 2 cosec
- prove that sin/1+cos+1+cos/sinu003dcosec
- prove that sin 1 cos 1 cos sin cosec
- prove that sin cos 1 sin cos 1 1 sec 10
- prove that sin cos 1 sin cos 1
- prove that sin cos 1 sin cos 1 1 sec tan
