Lesson: solving situational problems involving trigonometric identities

Directions: Solve the problem below by showing your step-by-step and detailed solution. Write your solutions on a sheet of paper. Study the scoring rubric to be be used in assessing your performance. Problem: Tonton's force F (in pounds) on his back when he bends over at an acute angle 0 (in degrees) is given by F= = 0 72W sin(8+90) where W is his sin 18 weight (in pounds). a. Simplify the formula. b. Find the force on Tonton's back if his weight is 162.35 lbs. if he bends an angle of 35". c. How many pounds should he weigh for his back to endure a force of 255 lbs. if he bends 40"