Goniometry and trigonometry - math problems
Number of problems found: 423
Calculate the area of a regular pentagon, which diagonal is u=16.
- Side c
In △ABC a=2, b=4 and ∠C=100°. Calculate length of the side c.
Determine angles of the right triangle with the hypotenuse c and legs a, b, if: ?
AC= 40cm , angle DAB=38 , angle DCB=58 , angle DBC=90 , DB is perpendicular on AC , find BD and AD
- Earth's circumference
Calculate the Earth's circumference of the parallel 48 degrees and 10 minutes.
- Decide 2
Decide whether points A[-2, -5], B[4, 3] and C[16, -1] lie on the same line
- The ladder
The ladder has a length of 3 m and is leaning against the wall, and its inclination to the wall is 45°. How high does it reach?
Road has climbing 1:27. How big is a angle corresponds to this climbing?
- Descent of road
Road sign informs the gradient is 10.9%. Calculate the angle which average decreases.
- Angle between lines
Calculate the angle between these two lines: ? ?
- The angle of lines
Calculate the angle of two lines y=x-21 and y=-2x+14
How high is the airplane's pilot to see 0.001 of Earth's surface?
- Tangens parallelogram
If ∠BAD between the sides AB and AD of the parallelogram is θ, what is tan θ? See diagram: A=(7,1) B=(5,-2) C=(12,1) D=(14,4)
- Right triangle
A right triangle ABC is given, c is a hypotenuse. Find the length of the sides a, b, the angle beta if c = 5 and angle alfa = A = 35 degrees.
For 7 hours of study, she scored a 75, so if she made 93, how many hours would she need to study?
- Ladder slope
What is the slope of a ladder 6.2 m long and 5.12 m in height.
Railway line had on 5.8 km segment climb 9 permille. How many meters track ascent?
- Isosceles triangle
What are the angles of an isosceles triangle ABC if its base is long a=5 m and has an arm b=4 m.
The angle of a straight road is approximately 12 degrees. Determine the percentage of this road.
- Five pumps
The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation.