Find value of tan in term of sin3A

Trigonometric function of sin 3A in terms of sin A is also known as one of the double angle formula. If A is a number or angle then we have, sin 3A = 3 sin A - 4 sin^3 A.

answer: -0.5 would be the most likley outcome

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -