Select the correct answer from each drop-down menu. Complete the statement. Using double-angle identity, cos^2(67.5°)-sin^2(67.5°)= BLANK (BLANK°) First blank: sin, cos, tan, ccs, sec, cot. Second blank: 33.75, 67.5, 135

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me