if 0<a<pi/2 prove that tana = root all (1-cos2a)/(1+cos2a) ( the square root is above the entire right hand side) and if 4tan(a-b) = 3tana, prove that tanb = sin2a/(7+cos2a) thanks for any help, i really appreciate it ! =D
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Originally Posted by flyinhigh123 if 0<a<pi/2 prove that tana = root all (1-cos2a)/(1+cos2a) ( the square root is above the entire right hand side) Hi Use the formula
Originally Posted by flyinhigh123 if 4tan(a-b) = 3tana, prove that tanb = sin2a/(7+cos2a) thanks for any help, i really appreciate it ! =D Now we need to prove that . Starting from the left side: 01
Hello, flyinhigh123! Prove: . We need these two identities: . We have: . . . Therefore: . If , prove that: . We are given: . . . . . . . . . . . . . . . . . Multiply by
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