Mitra and Satru

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Planets Strength

Graha Avasta - Ucha Avasta (Exelted), Mool trikon, Swa khetri (Own House), Mitra Khetri 
(Friend House), Sum, Satru khetri (Enemy House), Nich Avasta (Debilated).

Bhava Strength - Which house planet placed, like 9th and 5th house any planet then strong, 
if at kendra then good, if planet in dusthana house then week.

Make two group of Planets

1.A - Group - Sat, Mer, Ven - Friend Each Other

2.B - Group - Mar,Sun, Jup - Friend Each Other

A group planets , second rasi considered as Mooltrikon rasi for example Ven has two sings 2, 7 so 7 
come latter then 2 so 7 is the Mooltrikon rasi for ven. Same as Sat 10 and 11, 11 is conserdered as 
Mooltrikon rasi, Mer owner of 3 and 6 , 6 is considered as Mooltrikon rasi.

B group planets , fast rasi conserdered as Mooltrikon rasi for example Mar has two sign 1,8, and 1 is 
the mooltrikon for Mars, Jup 9 and 12 and 9 is the Mooltikon rasi.

Sun is Mooltrikon upto some part of Leo sign, moon is Mooltrikon at 2 sign where moon is exalted. 
0,3 Moon is Exalted if cross 3 degree then Moon is not exalted.

Sun 15 degree is exalted at leo and next 15 degree is own sign.

Simple rule is always create a chat Mooltrikona as ascendant and 3,6,7,10,11, always enemy .

To know Mitri and Satru just take Mooltrikona  ascendent, once chart prepared then 3,6,7,10,11, 
whose planet rasi / sign appear those are not friend of Mars means enemy of mars.