सिद्ध कीजिए कि
` (1+sin A- cos A)/(1+sinA+cos A)= tan. A/2 `

(sin A + sin2A) / (1 + cos A + cos2A) = tan A

Prove that (sin A+sin 2A)/(1+cos A +cos 2A)=tan A

(1 + cot A + tan A) (sin A-cos A) = sin A tan A-cot A cos A

Prove that (sinA+sin3A)/(cosA+cos3A)=tan2A .

Prove that : (sinA+sin3A)/(cosA+cos3A)=tan2A

Prove that (sinA -cos A+1)/(sin A + cos A - 1) = (1)/(sec A - tan A)

Prove that (i) (sec 8A -1)/(sec 4A -1) =(tan 8A)/(tan 2A) (ii) (cos A+ sin A)/(cos A - sin A)-(cos A-sin A)/(cos A+sin A)=2 tan 2A

If sinA=1/2 find sin2A & cos2A

(1 + tan A) / (1-tan A) = (cos2A) / (1-sin2A)

(cos2A) / (1-sin2A) = (1 + tan A) / (1-tan A)