Math, asked by nidhi110, 1 year ago

Solve the sum.........

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nidhi110: fast guys...

Answers

Answered by Anonymous

L.H.S

sec⁴A-sec⁴A*sin⁴A-2tan²A

(sec²A)²-(sec²A*sin²A)²-2tan²A

(sec²A+sec²*sin²A)(sec²A-sec²A*sin²A)-2tan²A

(sec²A+tan²A)(sec²A-tan²A)-2tan²A

(1+tan²A+tan²A)*(1)-2tan²A

(1+2tan²A)-2tan²A

1+2tan²A-2tan²A

1( proved)

sorry for late answer

please mark this as brainliest and ask where you didn't understand.

Anonymous: ok

nidhi110: hmm..

nidhi110: /explain thrid and fourth line plzz...

Anonymous: sec²A*sin²A=1/cos²A*sin²A=sin²A/cos²A=tan²A

nidhi110: oky

nidhi110: tnx

Anonymous: i have used the formula a²-b²=(a+b)(a-b)

Anonymous: anything else

Anonymous: hope you didn't mind for delay

nidhi110: yes....no prb

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