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.
What is the slope of a line with an inclination 1.06 rad?
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.
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?
The shooter fired to a target from distance 9 m The individual concentric circle of targets have a radius increments 1 cm (25 points) by 1 point. Shot was shifted by 16'(angle degree minutes). How many points should win his shot?
What angle rising stairway if step height in 17 cm and width 24 cm?