Question

Sin^2 21 + sin^2 69 / cos ^22 + cos^2 68 +sin^67+cos^2 68

Answer 1

Answer:

sin21 = sin(90-69) = cos69

cos22= cos(90-68) = sin68

and sin²a+cos²a = 1

putting all we get,

1/1+ sin²67+'cos²68

now either question is wrong or this is ur ans