(1-tanA)2+(1+tanA)2=2sec2A
Answers
Answered by
6
Answer:
2sec2A=2sec2A
Step-by-step explanation:
L.H.S
(1-tanA)2+(1+tanA)2
1+tanA2-2tanA+(1+tanA2+2tanA)
1+tanA2-2tanA+1+tan2A+2tanA
2+2tan2A
2(1+tan2A)
(1+tan2A)=sec2A
2(sec2A)
2sec2A
L.H.S=R.H.S
Answered by
4
Answer:
Step-by-step explanation:
(1 - tanA)² + (1 +tan A)² = 1 -2tanA + tan²A + 1 + 2 tanA + tan²A
= 2 + 2tan²A
= 2( 1+ tan²A)
= 2 sec²A
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