Question

solution of this question or method how to solve this​

Answer 1

Answer:

.........................

Answer 2

Answer:

here @ is mentioned as theta.N

Step-by-step explanation:

first , taking square on both sides,

Sin2@ = a2/a2+b2

then,

(a2+b2)sin2@= a2

now,

a2- a2Sin2@ =b2Sin2@

a2 (1- Sin2@) = b2Sin2@

i.e. a2 (cos2@) =b2Sin2@

because we know that,

Sin2@ + Cos2@ = 1

So,

aCos@ = b Sin@

because ,if square are equal then single are also equals.