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

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

c. side angle side. u shares the same sides

ok so the answer to your question is simple as long as you look at the different dimensions that contain the exemplary letters that combined in the right order give you words that eventually within the 5th dimension will conform and give you the correct answer to your question. hope i , stop looking at this easily, look at it with a spectral view.

step-by-step explanation:

told you