The value of tan 15°/2-sec^2 15°=? Answer is 1/2 root 3

Assuming the question as, tan152-sec215=2tan1522-sec215=12×2tan151-sec215-1=12×2tan151-tan215   Using the formula  sec2A-1 =tan2A= 12×tan2×15  Using tan2x = 2tanx1-tan2x=12×tan30= 12×13=123

  • 22
What are you looking for?