Question

Find the value of the following
cos 1395

Answer 1

The best way to solve this problem would be a scientific calculator.

Answer 2

google? I thought "mathletes" were supposed to be better than this.

Answer 3

\[\cos(1440+45)\]

Answer 4

cos(3*360+315)

Answer 5

cos315

Answer 6

so did u fine out the answer

Answer 7

4th quadrant angle

Answer 8

cos 45 is the answer

Answer 9

cos(360-45)

Answer 10

cos45

Answer 11

\[\frac{ 1 }{ \sqrt(2) }\]

Answer 12

@goformit100

Answer 13

cos(15*90+45)
(15*90+45) indicates 4th quadrant. in which cos is +ve.
additionally, as the multiple of 90 is odd, so cos changes to sin theta
so cos(1395)=sin45

Answer 14

How please explain ?

Answer 15

1395 Radians or Degrees?