Question

please answer if you know with proper explanation.​

Answer 1

Explanation:

for y to be minimum si (60+theta) must be maximum.

and maximum value sinx is 1 so maximum value of sin(60+ theta) is 1

and minimum value of y is 1

hence option a is correct

Answer 2

Answer:

Well Shreya dii, is equation mein -81y^2 hai instead of -18y^2.So your is absolutely correct if you put -18.Well have a cheerful day ahead and stay safe stay happy.

Peace:)