4-95. Estelle is trying to solve for x in the triangle at right. She lost her scientific calculator, but luckily her teacher tells her that sin 23= 0.391, cos 23" = 0.921, and tan 230.424.
Write an equation that Estelle could use to solve for X. b. Without a Calculator, how could estelle determine sin 67? Explain.

search the worksheet up on the internet

step-by-step explanation:

it works trust me

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

answer: 7

step-by-step explanation: