Math, asked by pawankhetwal, 7 months ago

Sin(x+y)÷sin(x-y)=tanx+tany÷tanx-tany

Answers

Answered by Anonymous
4

Step-by-step explanation:

We have,

tan

x

+

tan

y

=

sin

x

cos

x

+

sin

y

cos

y

,

=

sin

x

cos

y

+

cos

x

sin

y

cos

x

cos

y

,

tan

x

+

tan

y

=

sin

(

x

+

y

)

cos

x

cos

y

...

...

...

...

...

...

.

(

1

)

.

Similarly,

tan

x

tan

y

=

sin

(

x

y

)

cos

x

cos

y

...

...

...

...

(

2

)

.

by

(

1

)

and

(

2

)

,

tan

x

+

tan

y

tan

x

tan

y

,

=

sin

(

x

+

y

)

sin

(

x

y

)

.

Hence, the Proof.

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