If cos2A=13/36, show that cosA=7/6√2

Question

If cos2A=13/36, show that cosA=7/6√2

in progress 0
Jade 1 month 2021-08-13T02:06:09+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-13T02:07:47+00:00

    Step-by-step explanation:

    2b = 13/39 Hope you understand

    0
    2021-08-13T02:07:58+00:00

    Answer:

    the answer is cos 2b =13/39

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )