simple trigonometry

cos-1(cos(70)) + cos-1(cos(70))

• 140

• -2

• 37

• 195.23

If a triangle has a length of 3 and a height of 4, what is the length of the hypotenuse?

• 5

• 2

• 7.23

• 12

Answer explanation

if you missed that, you need to reevaluate your life choices and give up

if sin= opposite/hypotenuse and cos= adjacent/hypotenuse, then what is tan?

• tangent function (opposite/adjacent)

• tangent function (adjacent/opposite)

• tangent function

  (adjacent/adjacent)

• tangent function

  (opposite/opposite)

what is the formula for the law of cos?

• a^2 = b^2 + c^2

• a^2 + b^2 = c^2

• a^2 = b^2 + c^2 - 2bc(cos(A))

• a^2/b^2= c^2/d^2 cos(C)/a^2

what is sin short for?

(a)  

How do you get rid of a cos

• sin-1

• cos-1(cos-2)

• 2cos

• cos-1

if a triangle has three revealed sides and I want to find the angles, what would I use?

• tangent function

• cosines

• law of cosines

• cos^2+sin^2+tan^2

what formula is this: a^2+b^2=c2

• pythagorean theorem

• not a formula

• trigonometry

• tangent function

john is 2 years old. what is cos-1(cos(69)) + 1

• 2

• 70

• 69

• 2.5

what is 3 divided by 9 (EASY)

• 2/9

• 3

• 1/3

• 9/3