Question

Please answer question 11

Answer 1

11th sum

If sinA= sinC means angle A= C

In right angled ∆ sum of the angles is 180°

If one is 90° and the other equal angles are 45° each.

Sin 45° = 1/√2

Sin A+sinC = 1/√2 + 1/√2= √2

We know that tan45°=cot45°=1

Tan C + cot C = 1+1 = 2