Post a New Question

pre calculus

posted by on .

A parallelogram has a 70 degree angle and sides 6 cm and 10 cm long. How long are its diagonals?

  • pre calculus - ,

    I assume you have had trig. Draw the figure. if it has a 70 degree acute angle, the other angle is 110.

    Use the law of cosines:

    shortdiag^2=6^2+7^2-2*6*7Cos70
    longdiag^2=6^2+7^2-2*6*7Cos110

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question