Question

cos 20° + sin 20°/cos20°-sin20°
= tan 65°​

Answer 1

Answer:

cos 20=sin70 ----------(1)

putting cos 20 in given equation

then,

sin 70 + sin 20 / sin 70 - sin20

sin 90 / sin 50 ----------(2)

it gives

sin 90 / sin 50 = tan 65