Question

Complete the identity. I will post it.

Answer 1

oops - it won't let me in..

Answer 2

ok so you want to simplify this?

Answer 3

it says to complete it not sure...
A. cot α + cot β

B. tan α + tan β

C. tan β + tan α

D. -tan α + cot β

Answer 4

sin ( a + b) = sinacosb + cosasinb
--------- -----------------
cosacosb cosacosb

maybe this will help...

Answer 5

if we divide

= sina + sinb
---- ----
cosa cosb

= tan a + tan b

Answer 6

thats b

Answer 7

ohh thnx!

Answer 8

no probs

Answer 9

ohh never mind!

Answer 10

same one!

Answer 11

lol - ok

Answer 12

do you follow the method ok?

Answer 13

this was it!

Answer 14

A. 1 + cot α cot β

B. tan α tan β + cot β

C. 1 + tan α tan β

D. 1 + cot α tan β

Answer 15

i think we can do this in similar way

cos (a - b) = cosacosb + sinasinb
--------- ------------------
coscosb cosacosb

and if you do the division this = 1 + tan a tanb

which is option C

Answer 16

ohh okay thnx!

Answer 17

last step is
cosacosb
-------- = 1
cosacosb

and sina * sinb
--- ---- = tana * tanb
cosa cosb

Answer 18

yw