Question

Find the value of
sin² 25° + sin² 65º - cot² 45°​

Answer 1

Step-by-step explanation:

Sin²25 + Sin²65 - cot²45

Sin²(90⁰ - 65⁰) + sin²65 - Cot²45

Cos²(65) + Sin²(65) - cot²45

1 - 1 = 0.

therefore

(cos²θ + sin²θ = 0) & (Cot²45 = 1 )

Hope This Is Helpful