Math, asked by katariaashna90, 4 months ago

PROVE THAT
(1+ sinA-COSA//
(I + sinA + COSA) =
(√I-COSA)/
(√I+COSA)

Answers

Answered by surajraj0409
0

Answer:

+

cosA

sinA

=

cosA

1

Hence

cosA

1−sinA

∣=

cosA

1−sinA

.

Now

−1≤sinA≤1

Or

0≤1−sinA≤2.

Hence

∣1−sinA∣=1−sinA.

Hence we get

(1−sinA)(

∣cosA∣

1

cosA

1

)=0

Or

sinA=1 and A=

2

π

or

∣cosA∣=cosA. This implies Aϵ[−

2

π

,

2

π

].

Hence Ist and IVth quadrant

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