Question

Find the lengths of the missing sides. Show how to find the lengths.

Find the sine, cosine, and tangent of 30°. Write as decimals rounded to four decimal places.

Find the sine, cosine, and tangent of 60°. Write as decimals rounded to four decimal places.

Answer 1

sine 30 degrees = 0.5
cos 30 = .8660
tan 30.5774

Answer 2

sin(30)=7/c

Answer 3

tan(30)=7/a

Answer 4

get to love the 30-60-90 triangle... it makes thing so much easier without pythagorean theorem...

in a 30-60-90 triangle:
shortest side (opposite 30 degree angle) is HALF the length of the hypotenuse
the other leg (opposite 60 degree angle) is (shortest side) * sqrt3

Answer 5

indeed

Answer 6

Thanks guys