Question

2 by root over 2 + Root over 2 + Root over 2 + 2 cos8theta=.....?​

Answer 1

Answer:

√{2+√(2+2cos4A)}

=√[2+√{2+2(2cos²2A-1)}]

=√{2+√(2+4cos²2A-2)}

=√(2+√4cos²2A)

=√(2+2cos2A)

=√{2+2(2cos²A-1)}

=√(2+4cos²A-2)

=√4cos²A

=2cosA(Proved)

Answer 2

Answer:

Sectheta

Step-by-step explanation:

64+(93(89):+783()(9