PreCalc Graded Assignment: Trigonometric Identities Simplify the following expressions. Show each step. 1. sin 0 cot e 4. 1 - (sec 0 - tan' 0) COSH 2. core 5. sin 8 + cot 6 cos e 3. sin' 8 + cos'8 + 1 6. sec @ sin 0 cot 8 7. sino - cost sin d cosa (Hint: separate as two fractions, each with a denominator of sinecose) Prove the following trigonometric identities. Show each step. B. cos'@ + sin' 0 cos 0 = cos e 9. tan 0 - = sin 0 tan 0+1 10. (sin 8 + cos 0) + (sin 0 - cos B) = 2