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In a circle the centre point is 'O' and OABC is a parallelogram then find angle OAC and angle OAB.
top is 12 meters across: straight line down is 7.81 meters, slope is 2:1. what is the base
The diagram shows a sector of a circle of radius r cm containing angle Ө radians. The area of the sector is Acm2 and the perimeter of the sector is 50 cm.
a. Find Ө in terms of r.
b. Show that A = 25r – r2
The angle of depression is 20° for a yacht and the barge is 12° 30'. Are they less than 300' apart?
sin2A + sin4A = cosA + cos3A
2sin²3π/4+2cos²3π/4-2tan²3π/4
prove that (1+sinA)²+(1-sinA)²/cos²Α=2(1+sin²Α/1-sin²Α)
sec alpha = 5/4, find value of tan alpha/1 + tan square alpha
what is the importance of trigonometry in daily life?
Frank and Marie set sail from the same point. Frank is sailing in the direction S5 °E. Marie is sailing in the direction S9°W. After 3 hours, Marie was 2 miles due west of Frank. How far had Marie sailed? Round to 4 decimal places.
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