diwashkandel6pe02af diwashkandel6pe02af
  • 02-02-2019
  • Mathematics
contestada

tan65°-tan25°=2tan40° prove !!!

Respuesta :

singlegirlforlife541
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

HELP PLEASEEEEEEEEEEEEEEE
A group of related species are in the same what
I don't know this. Can someone please help me. I am in 7th grade.
Which table shows a proportional relationship between x and y? 4 7 8 10 O 2 3.5 4 y 5 2 х 4 7 8 O 6 у 10 21 24 х 1 2 4 3 o 00 6 8 10 12 y 40 50 60 X 90 O 8 10 1
How would you write the genotype for the heterozygous examples? CBCY CBCB CYCY
PLS PLS PLS HELP ME...​
Simplify ur answer 3+3s-2s
what is the narrative point of view of the story The Prospector’s Trail?
.........................
Most people who came to what is now the United States between 1600 and 1800 were called O colonists. O servants. O Puritans. O Quakers.