Which of the following is equivalent to [sin (2θ) − tan (θ)] / tan (θ) ?

a. sin (2θ)
b. cos (2θ)
c. 1 - 2 cos^2 (θ)
d. 1 + 2 cos^2 (θ)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

no he doesnt because "-16' is negatiive

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 -