No. 6 Verifying a Trigonometric Identity
No. 12 Verifying a Trigonometric Identity (Working Separately With Both Sides)
No. 13 Verifying a Trigonometric Identity
No. 16 Verifying a Trigonometric Identity
No. 29 Verifying a Trigonometric Identity (Using Even/Odd Identities)
No. 37 Verifying a Trigonometric Identity (Using a Cofunction Identity)