Prove the identity: 23.) (tan3x - tanx)/(1 + tan3xtanx) = 2tanx/(1-tan^2 x) <--- tan squared elp!!!
Follow Math Help Forum on Facebook and Google+
Originally Posted by ^_^Engineer_Adam^_^ Prove the identity: 23.) (tan3x - tanx)/(1 + tan3xtanx) = 2tanx/(1-tan^2 x) <--- tan squared elp!!! Use the trig identity: Use the trig identity:
Hello, ^_^Engineer_Adam^_^! We also can do it "the long way" . . . We're expected to know that: . Prove the identity: The left side is: . Multiply top and bottom by . . We have: . Factor: .
View Tag Cloud