Asked by Help .-.

If cos(23x+20)°=sin(2x−10)°, find the acute angles of the corresponding right triangle.
A= B=

A skateboarding ramp is 14 inches high and rises at an angle of 19°. How long is the base of the​ ramp? Round to the nearest inch.

A. 38in
B. 41in
C.43in
D.15in

A pilot flying a helicopter locates a person on the ground. The horizontal distance from the person to the helicopter is 950 feet, and the height of the helicopter above the person is 500 feet. What is the approximate angle of depression from the helicopter to the person, rounded to the nearest whole degree?

A. 58
B.62
C.28
D.32

A buoy is floating in the water near a lighthouse. The height of the lighthouse is 18 meters, and the horizontal distance from the buoy to the base of the lighthouse is 45 meters. What is the approximate angle of elevation from the buoy to the top of the lighthouse, rounded to the nearest whole degree?

A. 22
B. 66
C. 24
D. 68

Two girls are standing 100 feet apart. They both see a beautiful seagull in the air between them. The angles of elevation from the girls to the bird are 20° and 45°, respectively. How high up is the seagull? Round to three decimal places. Show your work.
Answered by oobleck
since cosθ = sin(90-θ)
23x+20 = 90 - (2x−10)

x/14 = cos19°

tanθ = 500/950

Now you try the rest, after reviewing your basic trig functions.
Answered by ifsionfodsn
Oobleck that makes no sense brother, its an acute angle how would it be 500/950, there is two separate angles on for each function.
Answered by Connexus student
Hi guys my teacher did some of these problems in class...
For the skateboard one its 41 inches
Pilot is 62 degrees
Buoy is 24 degrees
Hope this helps!
Answered by ALSO conexxus
OMG THANK YOU!!!!
Answered by noname bobby
Well what if I don't WANT to round?! Ever thought about that?!
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