Question

Can someone answer this plss?

Answer 1

which class????

plzz tell me

if i able to answer than.........

Answer 2

sin {90-(50-3/2a)} = cos (3a - 50)

cos(40 + 3/2a) = cos(3a-50)

40 + 50 = 3a - 3/2 a

3a/2= 90

3a = 180

a = 60

tan 60 × sin 60 - cot 60 × sin 60

√3 × √3/2 - 1 /√3 × √3/2

= 1

alpha is taken as 'a' here .

plz mark as brainiest ans