Math, asked by amninderkaur62, 10 months ago

sin A-cosA+1/sinA +cosA -1=1/secA - tan A​

Answers

Answered by sandy1816
4

Step-by-step explanation:

LHS:

devide cosA in both numerator & denimunator

tanA-1+secA/tanA+1-secA

={(tanA+secA)-1}(tanA-secA)/{(tanA-secA)+1}(tanA-secA)

=(tan²A-sec²A)-(tanA-secA)/(tanA-secA+1)(tanA-secA)

=-1-tanA+secA/(tanA-secA+1)(tanA-secA)

=-1-(tanA-secA)/(tanA-secA+1)(tanA-secA)

=-1/tanA-secA+1

=1/secA-tanA

RHS

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