yeah I can do these
like the combined trig term is sin(θ+𝜶)
my teacher told me that considering θ will make the question more complicated as for every angle there is some minimum and then to find the minimalist of them is very hard
he told me that these types of questions are solved by using...
you are guiding me the question with understanding of high level physics
and I don't think it applies to these questions
still I am open to learn new things
it is a basic level question of my coaching institute's daily practice paper intended for the preparation of JEE
so I think it is ought to be a little easy(not including problems with continuous variable)