Sin (A + B )≡sin Acos B+cosAsinB, sin (A −B )≡sin Acos B-cosAsinB.

a)Prove that . sin (A + B )+sin (A −B ) ≡ 2sinAcosB.

b)Hence Prove that sin P +sin Q≡ 2sin ((P + Q)/2)cos ((P -Q)/2)

(c ) Hence or otherwise , show that sin 5θ+ 2sin3θ +sin θ ≡ 4 sin3θ 〖cos〗^2 θ

(d ) Solve to the nearest 0.1º , for 0º ≤ θ ≤ 90º ,the equation

sin 5θ + 2sin 3θ +sin θ = 3〖cos〗^2 θ

Three children each had the same amount of money in their savings account. one of the children withdrew three quarters of her moneyand spent it all on a $100 sports jersey. what was the total amount of money originally in the accounts?

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

Click the arrows to advance or review slides. mapping carbohydrates to food carbohydrates (grams) 15 food (quantity) bread (1 slice) pasta (1/3 cup) apple (1 medium) mashed potatoes (1/2 cup) broccoli (1/2 cup) carrots (1/2 cup) milk (1 cup) yogurt (6 oz.) 12 12 is jennifer's relation a function? yes no f 1 of 2 → jennifer figure out the difference between a function and a relation by answering the questions about her food choices