# trig

use trig. identities to find the exact value.

tan 25° + tan 5° / 1- tan 25° tan 5°

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1. tan(25+5)= tan25+5/1-tan25tan5

tan(30)= tan25+5/1-tan25tan5

1/root(3)= tan25+5/1-tan25tan5

ur answer is 1/root(3)

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