binitasharma71 binitasharma71
  • 19-06-2021
  • Mathematics
contestada

prove that: sin8A/1-cos8A=cot4A​

Respuesta :

Trancescient
Trancescient Trancescient
  • 19-06-2021

Step-by-step explanation:

Recall the identity

[tex]\tan \frac{A}{2}= \dfrac{1 - \cos A}{\sin A}[/tex]

We can see that

[tex]\dfrac{\sin 8A}{1 - \cos 8A} = \dfrac{1}{\tan 4A}= \cot 4A[/tex]

Answer Link

Otras preguntas

To amend U.S. Constitution, 3/4 of the 50 states must approve the amendment. If 35 states approve an amendment, will the Constitution be amended?
Which nations claimed the Oregon country? How did John Quincy Adams resolve the claims?
What system facilitates the movement of water between spheres through the process of transpiration?
What is the concentration of hydronium ions and hydroxide ions
What words with prefix Mis?
in "morte d' Arthur", what was causing Arthur to die
7 and 6/9 - 3 and 2/5 =?
Dew is formed when small water droplets condense on grass. In what type of environment is dew NOT likely to form?
how did president roosevelt indicate his commitment to being prepared for war?
Atoms that have filled outermost energy levels and do not participate in chemical bonding are called _____.