If vectors 𝑨 ⃗=𝐜𝐨𝐬 𝟂𝒕𝒊 ̂+𝒔𝒊𝒏 𝟂𝒕𝒋 ̂ and 𝑩 ⃗=𝐜𝐨𝐬 𝟂𝒕/𝟐 𝒊 ̂+𝒔𝒊𝒏 𝟂𝒕/𝟐 𝒋 ̂ are function of time, then the

If vectors 𝑨 ⃗=𝐜𝐨𝐬 𝟂𝒕𝒊 ̂+𝒔𝒊𝒏 𝟂𝒕𝒋 ̂ and 𝑩 ⃗=𝐜𝐨𝐬 𝟂𝒕/𝟐 𝒊 ̂+𝒔𝒊𝒏 𝟂𝒕/𝟐 𝒋 ̂ are function of time, then the value of t at which they are orthogonal to each other is a)𝒕=𝟎 b)𝒕=𝞹/𝟒𝟂 c)𝐭=𝞹/𝟐𝟂 d) 𝐭=𝞹/𝟂