Question

If 2costheta = root 3 prove 3sintheta - 4sin^3 theta = 1

Answer 1

Answer:

find five ration numbers between 1and 2

Answer 2

Answer:

LHS = RHS     , For steps scroll down

Step-by-step explanation:

2cos∅=√3

Pove that :- 3sin∅-4sin³∅=1

First solving :-

2cos∅=√3

cos∅=√3/2

cos∅=Adjacent side /Hypoteneus

Adjacent side=√3 and Hypoteneus=2

By pythgoras therorm

Opposite side=1

sin∅=1/2

Pove that :- 3sin∅-4sin³∅=1

Substituting the value of sin∅

3sin∅-4sin³∅=1

LHS =3sin∅-4sin³∅

RHS=1

First solving LHS

3(1/2)-4(1/2)³

(3/2)-4(1/8)

3/2 - 1/2

2/2 = 1

LHS = RHS

HENCE PROVED

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