7 mnemonic devices in this subject.

• All Students Take Calculus
• CAST
• SCience Teacher, Very CRuel Man, (does nt give) Free Couching to Needy CouSINE...
• SOH-CAH-TOA
• Some Old Hags Can't Always Hide Their Old Age
• Some People Have Curly Black Hair Thickly Plastered Back
• Two Old Angels Skipped Over Heaven, Carrying Ancient Harps