Angle + real numbers - math problems
Number of problems found: 13
If the angle α is acute, and cotg α = 1/3. Determine the value of sin α, cos α, tg α.
Determine the dimensions of cuboid a, b, c; if diagonal d=9 dm has angle with edge a α=55° and has angle with edge b β=58°
How high is the building that throws horizontal shadow 95.4 m long at angle 50°?
The observer sees a straight fence 100 m long in 30° view angle. From one end of the fence is 102 m. How far is it from another end of the fence?
- Triangle TBC
TBC is isosceles triangle with base TB with base angle 63° and legs length |TC| = |BC| = 25. How long is the base TB?
- Trigonometric functions
In the right triangle is: ? Find the value of s and c: ? ?
- Rail turn
The curve radius on the railway line is 532 m . Length of rail track on it is 818 m. How many degrees is the angle ASB, if A and B are boundary points and S is center of arc curve.
- Cone A2V
The surface of the cone in the plane is a circular arc with central angle of 126° and area 415 cm2. Calculate the volume of a cone.
What is the slope of a line with an inclination 6.06 rad?
- Regular 5-gon
Calculate the area of the regular pentagon with side 7 cm.
- IS triangle
Calculate interior angles of the isosceles triangle with base 40 cm and legs 22 cm long.
- Quarter circular
The wire that is hooked around the perimeter of quarter-circular arc has length 3π+12. Determine the radius of circle arc.
Determine the interior angles of a rhombus with area 319.1 cm2 and perimeter 72 cm.