Saved Bookmarks
| 1. |
Prove that sin-cos+1 1 __________ = ______. Sin +cos-1 Sec-tan |
|
Answer» Hope yu can understand ?? First divide numerator and denominator by cos theta, then multiply (tan theta - sec theta) in both numerator and denominator. And solve it. LHS: Sin-cos+1/sin+cos-1. = ((sin-cos+1)/cos)/(sin+cos-1)/cos=Tan+sec-1/tan-sec+1=== substitute sec^2-tan^2 in place of +1=Tan+sec-1/tan -sec+(sec^2-tan^2)=Tan+sec-1/tan-sec+(sec-tan)(sec+tan)=Tan+sec-1/-(tan-sec)(sec+tan-1)=1/sec-tan Explain the every thing Can\'t understand the question.? Sin -cos+1÷sin +cos -1 = 1÷sec-tan |
|