Tan - examples
- How far
From the top of a lighthouse 145 ft above sea level, the angle of depression of a boat 29°. How far is the boat from the lighthouse?
One angle of a rhombus is 136° and the shorter diagonal is 8 cm long. Find the length of the longer diagonal and the side of the rhombus.
- 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.
- 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.
- Angle between lines
Calculate the angle between these two lines: ? ?
- Descent of road
Road sign informs the gradient is 10.5%. Calculate the angle which average decreases.
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?
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.
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?
Road has climbing 1:23. How big is a angle corresponds to this climbing?
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?
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.
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?
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'.
What angle rising stairway if step height in 17 cm and width 24 cm?