Question

1-cos theta/sin theta =sin theta/1+cos theta

Answer 1

Answer:

Step-by-step explanation:

1-cosФ/sinФ=sinФ/1+cosα

doing criss cross multiplication we get

 (1+cosФ)(1-cosФ)=sinФ×sinФ

(1)²-(cosФ)²=sin²Ф

we know that

1-cos²Ф=sin²Ф

So ;now

sin²Ф=sin²Ф

hence proved

Answer 2

Answer:

1-cos theta by sin theta