elinatee0624 elinatee0624

27-06-2019
Mathematics

contestada

prove this trigonometric identity
sin 3x/sin x - cos 3x/cos x =2

Respuesta :

Abinatamang Abinatamang

27-06-2019

Step-by-step explanation:

LHS= sin 3x/sin x - cos 3x/cosx

Taking LCM,

=sin3xcosx- cos3xsinx

sinxcosx

=sin(3x-x)

sinxcosx

= 2sin2x

2sinxcosx

= 2sin2x

sin2x

=2

= RHS.

Proved.

Answer Link

Otras preguntas

The case of United States v. Stevens in 2010 is an example of the Supreme Court’s power of

please help with the steps

Ammonium sulfate (NH4)2SO4 is made by reacting 25.0 L of 3.0 mol/L H2SO4 with 3.1× 103 L of NH3 at a pressure of 0.68 atm and a temperature of 298 K according t

you are a bus driver .20 people get on , 12 people get off , 3 more get on 5 people get off with 20 more getting on . what "s the bus driver name ? you never sa

Simplify 20 k + 15 k -5k

Is the highlighted verb correct or incorrect if the speaker had been on time, the program would have begun on time.

for what values of x are these functions defined x - 1

Distinguish rational numbers from the following. a. √25 b. √23 c. 1.01 d. 2.323223222... e. 3.786

what do u understand by the wordATOM

W.E.B. DuBois starts his chapter opposing Booker T. Washington with this sentence: In failing thus to state plainly and unequivocally the legitimate demands of