Evaluate the geometric series. Help me!!

255

Step-by-step explanation:

The n th term of a geometric series is

= a

where a is the first term and r the common ratio

1 ← is the n th term

with a = 1 and r = 2

The sum to n terms of a geometric series is

= , thus

=

    = - 1 = 256 - 1 = 255

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.