diwashkandel6pe02af diwashkandel6pe02af

02-02-2019
Mathematics

contestada

tan65°-tan25°=2tan40° prove !!!

Respuesta :

singlegirlforlife541 singlegirlforlife541

02-02-2019

Answer:

tan65 - tan40 = tan 25 + tan 40 .

using tanA - tan B =sin(A - B)/cosAcosB and tanA + tan B

= sin( A + B)/cosAcosB

= we get :: to prove sin 25/ cos65

= sin65 / cos25 sin 25 = cos (90 - 25)

= cos 65 and sin 65

= cos (90 - 65)

= cos 25

-Leah

Answer Link

Otras preguntas

Which reference point would give the most accurate measurement to determine the motion of a passenger sitting in a train?

Need help with this problem

Which of the following combination of elementary substances may react to form a chemical compound made up of molecules? - C(s) and Br2(I) -I2(s) and Mg(s) -O2(g

Question 4 options: vaporization freezing condensation melting

Each of the following is a sign of an unhealthy friendship except

Many african americans feel the flag for the confederate states of america, "the stars and bars," is a sign of racial hatred. state rights advocates view the sa

determine which ordered pair is a solution of y = x + 2/5 (< that's a fraction and so are those down dere) (0,0) (1,2/5) (1,2/5) (2,2 2/5)

50-0 ———(12.0-0) +0 = 12.0-0 Just a warm up

A long-distance telephone company charges a rate of 6 cents per minute or a 40-cent minimum charge per completed call, whichever is greater. Find the cost

Assuming the diameters of the nucleus and atom are 10−4 å and 1 - 5 å correspondingly, what fraction of the volume of the atom is taken up by the nucleus?