Question

please answer soon....​

Answer 1

➫ correct question :-

⇝ If sinθ + sin²θ = 1 ,prove that cos²θ +cos⁴θ = 1

➝ Given :-

→ sinθ + sin²θ = 1

➝ To prove :-

→ cos²θ + cos⁴θ = 1

➝ Solution :-

↬sinθ+ Sin²θ= 1.

↬sinθ = 1 - sin²θ

↬sinθ = cos²θ. [ ∵ 1 - sin²θ = cos²θ ]

↬sin²θ = cos⁴θ

↬1- Cos²θ=cos⁴θ. [ ∵ sin²θ = 1 - cos²θ ]

↬cos²θ+ cos⁴θ = 1.

hence proved...