Question

jaldi please,,,,,,,,​

Answer 1

Hi !

So simple bache !

As you know that , 2 sin²¢ = 1 - cos2¢

and , 2cos²¢ = 1+ cos2¢

so just put that value ,

1 - cos2¢ / 1+ cos2¢ = 2sin²¢ / 2cos²¢ = tan²¢

LHS = RHS prooved !

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Hope it helps !

@Raj Kumar ❤

Answer 2

$\huge\boxed{\bold{\underline{\underline{Answer:-}}}}$

We Have given that:-

                         1-cos2Ф/1+cosФ = tan²Ф               .........(1)

We Know that,

¬1 - cos2Ф = 2 sin²Ф

¬1 + cos2Ф = 2 cos²Ф

Now Putting the value in eq. (1)

¬2 sin²Ф/2 cos²Ф = tan²Ф

¬tan²Ф = tan²Ф

                                        L.H.S = R.H.S

                                       HENCE, PROOFED