Question

Help pls-

I dont know it T^T

Answer 1

Ans: H and A

Explanation:

By the identity:

1-(cos(x))
`cos^(2)(x)+ sin^(2)(x)=1\\cos^(2)(x)=1- sin^(2)(x)\\\\cos(x)=\sqrt{1- sin^(2)(x)} \\sin(x)=\sqrt{1- cos^(2)(x)}\\\\\sqrt{1- cos^(2)(x)}/sinx=1\\\sqrt{1- sin^(2)(x)}/cosx=1\\\sqrt{1- cos^(2)(x)}/sinx+\sqrt{1- sin^(2)(x)}/cosx=2\\\\\\`

Ans: H

For second quesiton, the transformation of a graph is that:

f(x) + k means vertical translation up by k units

Two curve have the same maximum value, so the graph doesn't translate upwards or downwards, thus b=0

Ans: A