Tan - examples
- Sun rays
If the sun's rays are at an angle 60° then famous Great Pyramid of Egypt (which is now high 137.3 meters) has 79.3 m long shadow. Calculate current height of neighboring chefren pyramid whose shadow is measured at the same time 78.8 m and the current hei
- Trigonometric functions
In right triangle is: ? Determine the value of s and c: ? ?
How high is the building that throws horizontal shadow 58.5 m long at angle 36°36'?
From the observatory 15 m high and 39 m from the river bank, river width appears in the visual angle φ = 22°. Calculate width of the river.
- Regular 5-gon
Calculate area of the regular pentagon with side 11 cm.
- Descent of road
Road sign informs the gradient is 10.5%. Calculate the angle which average decreases.
- Angle between lines
Calculate the angle between these two lines: ? ?
Maple peak is visible from a distance 4 m from the trunk from a height of 1.7 m at angle 50°. Determine the height of the maple.
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?
Calculate the length of the side FL and diagonal JL of rectangle JFLB when given: |BL| = 33 cm and angle ∠ JFB = 32 degrees.
On the pedestal high 2.3 m is statue 3.3 m high. At what distance from the statue must observer stand to see it in maximum viewing angle? Distance from the eye of the observer from the ground is 1.5 m.
What is the slope of a line with an inclination 1.06 rad?
The building I focused at an angle 30°. When I moved 5 m building I focused at an angle 45°. What is the height of the building?
The plane flies at altitude 6800 m. At the time of first measurement was to see the elevation angle of 20° and second measurement of the elevation angle of 34°. Calculate the distance the plane flew between the two measurements.
Road has climbing 1:23. How big is a angle corresponds to this climbing?
How tall is the tree that observed in the visual angle of 52°? If I stand 5 m from the tree and eyes are two meters above the ground.
Mast has 9 m long shadow on a slope rising from the mast foot in the direction of the shadow angle at angle 9.8°. Determine the height of the mast, if the sun above the horizon is at angle 36°6'.
On the road sign, which informs the climb is 20%. Car goes 5 km along this road. What is the height difference that car went?
What angle rising stairway if step height in 17 cm and width 24 cm?
Determine angles of the right triangle with the hypotenuse c and legs a, b, if: ?