Trigonometry Answers

prove the identity cos³2A+3cos2A=4(cos^6A-sin^6)

prove:
sina A/1+cosA=1-cosA/sinA

Simplify:
Log 2 16

A. 25
B. 8
C. 4

Solve for X:
Log 2 16 = X

A. 8
B. 256
C. 4

Solve for X:
Log 3 X = 2

A. 18
B. 9
C. 6

Write in Exponential Form:
Log 8 1 = 0

A. 0^8 = 1
B. 1^0 = 8
C. 8^0 = 1

Write in Logarithmic Form:
125 = 5 ^ 3

A. Log (base 125) 5 = 3
B. Log (base 3) 125 = 5
C. Log (base 5) 125 = 3

Write in Logarithmic Form:
2 ^ 4 = 16

A. log (base 16) 2 = 4
B. Log(base 2)16 = 4
C. Log(base 4)16 = 2

Plz show how to solve-
4sin x*sin 2x*sin 4x=sin 3x

cot A+cosec A-1/cot A-cosec A+1=1+cos A/sin A