(1) A tower has an observation deck about 330 m above ground level. About how far is it from the observation deck to the horizon knowing that the Earth's radius is 6400 km? (2) What...

(1) A tower has an observation deck about 330 m above ground level. About how far is it from the observation deck to the horizon knowing that the Earth's radius is 6400 km? (2) What...

I'm having trouble solving the above question, as well as the one below tan20+tan10/1-tan20tan10=

trigonometry

the problem is stated as above. I'm just not sure where to start.

tan5(*pie symbol)/ 6

sin 450°, cos(-780°), and tan (37π/6)

1. Find the exact value of cos(t/2) if sin(t) = -7/25 and pi < t < 3pi/2 2. Find all the solutions in the interval [0,360] cos(2x)= - sqr...

tan 7π/8

The diagonals of a rhombus bisect each other and cross at right angles.

Suppose you want to approximate the function f(x)=(x−2)2+4f(x)=(x−2)2+4 at x=3x=3. Given a line with slope mm through the point (a,b)(a,b), what is the point-slope form of the line?

the line x-2y+16=0 is tangent to a circle at (0,8). The line y=2x-1 is tangent to the same circle at (3,5). What is the center(ordered pair) of the circle?

Thanks for the help! If you could please show all your work? Thanks again!

Consider the equation cos(3.14t)=-0.7. Find the smallest positive solution in radians and round your answer to 4 decimal places Consider the equation tan(3.25t)-6.6. Find the smallest...

The measure of the angle from a line l1, with slope -1/3 to a line l2 is 135°. Find the slope of the line l2?

Okay, so my but shows e^ integral tanx to be e^ln|secx|. as far as I know, the integral of tanx is -ln|COSx|. how do they do that?

In triangle XYZ, the measure of angle Y is 90°, YZ=12, and XZ=15. Triangle HJK is similar to triangle XYZ, where vertices X, Y, and Z, respectively, and each side of triangle HJK is 1/5 the length...

If cos t/sin t=1/3, then what's tan t?

A ladder leans against a wall with its foot 1.5 metres from the wall making for an angle of 45º36' with the ground. How long is the ladder?

solve on the interval [0,2(pie)). The square root is just on the top 3 not the whole fraction.

Find number of points where tangents does not exist for the curve y =sgn(x2 -1 )