Open Middle: Build a Trig Equation (3)

Using any digit in the range [0-9] NO MORE THAN ONE TIME EACH, fill in the blanks on the right to create a trig equation with one of its (infinitely many) solutions.

Algebraically show how your solution satisfies your original equation above.

Using any digit in the range [0-9] NO MORE THAN ONE TIME EACH, create another valid setup that is ENTIRELY DIFFERENT from the one you created above.

Algebraically show how your solution satisfies your original equation above.

Given the fact we can only use digits [0-9] no more than one time each, what is the LOWEST POSSIBLE SOLUTION you can create here? Explore!

Given the fact we can only use digits [0-9] no more than one time each, what is the HIGHEST POSSIBLE SOLUTION you can create here? Explore!