Question

1. নীচের অভেদাবলি প্রমাণ করাে:
(i) sinA cos A (tanA + cotA) = 1
(ii) sina cosa(tana - cota) = 2 sinļa - 1​

Answer 1

Step-by-step explanation:

i) sinA cosA (tanA + 1/tanA) =1

or sinA cosA (tan²A + 1) = tanA

or, sinA cosA 1/cos²A = tanA

or, sinA/cosA = tanA = 1

ii)

Answer 2

Sin A Cos A (tan A + CotA )