Find the exact value expression. tan^-1 (0)

Hence, the exact value of the expression is:

0

Step-by-step explanation:

We are given a expression as:

tan^-1 (0).

We have to find the value of a angle such that it is obtained on taking inverse of tangent of 0.

Let us consider,

Θ=tan^-1(0)

on taking tangent function on both side of the equation we get:

tan(θ)=tan(tan^-1(0))

tan(θ)=0

tan(θ)=tan(0)

since,

Hence,

Hence we get:

Θ=0.

Hence, the exact value of the expression is:

0

b. 2 and 4

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 -