12 balnk 4 blank 3=9 answer statement with +×÷or- it needs to be correct answer its pemdas

If sin θ=24/25 and 0 less than or equal to θ less than or equal to π/2, find the exact value of tan 2θ. answers; a) -527/336 b) -336/527 c)7/24 d) 24/7

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?