prove that =prove 1 - sec@+tan@/1+sec@ - tan@=Sec@+ tan@-1/sec@+tan@+1
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Answer:
Step-by-step explanation:
LHS=(secA+tanA−1)(secA−tanA+1)
=(
cosA
1
+
cosA
sinA
−1)(
cosA
1
−
cosA
sinA
+1)
=(
cosA
1+sinA−cosA
)(
cosA
1−sinA+cosA
)
=
cos
2
A
1−sinA+cosA+sinA−sin
2
A+sinAcosA−cosA+sinAcosA−cos
2
A
=
cos
2
A
2sinAcosA
=2tanA
=RHS
Hence proved
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