How do you solve the right triangle

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △