COSA + SinA /COSA -SinA = 1+tan A/ 1-tan A
Answers
Answered by
1
Step-by-step explanation:
Solution
tanA−secA+(sec
2
A−tan
2
A)
tanA+secA−1
=
tanA−secA+(secA−tanA)(secA+tanA)
tanA+secA−1
=
(tanA−secA)(1−secA−tanA)
tanA+secA−1
=
−(tanA−secA)(secA+tanA−1)
tanA+secA−1
=
secA−tanA
1
=
cosA
1
−
cosA
sinA
1
=
1−sinA
cosA
=
1−sinA
cosA
×
1+sinA
1+sinA
=
1−sin
2
A
cosA(1+sinA)
=
cos
2
A
cosA(1+sinA)
=
cosA
1+sinA
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Answered by
0
=tanA−secA+(secA−tanA)(secA+tanA)
tanA+secA−1
=(tanA−secA) (1−secA−tanA)
tanA+secA−1
=−(tanA−secA)(secA+tanA−1) tanA+secA−1
=secA−tanA1
=cosA1−cosAsinA1
=1−sinAcosA
=1−sinAcosA×1+sinA1+sinA
=1−sin2AcosA(1+sinA)
=cos2AcosA(1+sinA)
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