Sine - examplesMost 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.
- Ratio iso triangle
The ratio of the sides of an isosceles triangle is 7:6:7 Find the base angle to the nearest answer correct to 3 significant figure.
- Triangle ABC v2
Area of the triangle is 12 cm square. Angle ACB = 30º , AC = (x + 2) cm, BC = x cm. Calculate the value of x.
Calculate the length of side, circumference and area of a regular pentagon, which is inscribed in a circle with radius r = 6 cm.
Between cities A and B is route 3 km long of rise average 4‰. Calculate the height difference of cities A and B.
Is true equality? ?
Boys run kite on a cable of 86 meters long. What is the kite altitude, if the angle from the horizontal plane is 77°?
- Height 2
Calculate the height of the equilateral triangle with side 43.
The longer leg of a 30°-60°-90° triangle measures 7. What is the length of the shorter leg?
- Cable car 2
Cable car rises at an angle 39° and connects the upper and lower station with an altitude difference of 345 m. How long is the track of cable car?
- Trigonometric functions
In right triangle is: ? Determine the value of s and c: ? ?
The observer sees straight fence 100 m long in 30° view angle. From one end of the fence is 119 m. How far is it from the another end of the fence?
- Hexagon A
Calculate area of regular hexagon inscribed in circle with radius r=7 m.
- Maximum area of rhombus
Calculate the interior angles at which equilateral rhombus has maximum area.
- Regular 5-gon
Calculate area of the regular pentagon with side 11 cm.
If you know that cos(α) = sin (-968°), what is the angle α?
- Equilateral triangle
How long should be the minimum radius of the circular plate to be cut equilateral triangle with side 7 mm from it?
Steeple seen from the road at an angle of 57°. When we zoom out to 25 meters, it is seen at an angle of 21°. What is high?
What is the side length of the regular 5-gon inscribed in a circle of radius 11 cm?
Calculate the length of the side FL and diagonal JL of rectangle JFLB when given: |BL| = 33 cm and angle ∠ JFB = 32 degrees.
Calculate the perimeter of a regular nonagon (9-gon) inscribed in a circle with a radius 20 cm.