03/20/18

Find, to the nearest unit, the length of each diagonal
The length of each side of a rhombus is 12. The measure of an angle between two adjacent sides is 40. Find, to the nearest unit, the length of each diagonal
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03/19/18

Air is being pumped into a spherical balloon so that its volume increases at a rate of 50 cm^3 /s .
How fast is the surface area of the balloon increasing when its radius is 14cm? Recall that a ball of radius r has volume V=(4/3)pi r3 and surface area S=4pi r2
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03/19/18

Gravel is being dumped from a conveyor belt at a rate of 50 cubic feet per minute. form right circular cone whose base diameter and height are always the same
How fast is the height of the pile increasing when the pile is 20 feet high? Recall that the volume of a right circular cone with height h and radius of the base r is given by V= (1/3)pi r2 h
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03/14/18

Verify the identity: sin(a+b)/tana+tanb=cosacosb
 Verify the identity.
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03/13/18

Ground Speed Vs. Attempted Speed
A plane travels at 400mph at a bearing of North 40(degrees) East but the wind changes the intended course. The velocity of the wind is 20mph at a bearing of South 10(degrees) West. Find the... more
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03/12/18

The line y=3x+2 is reflected over the line y=-1. What is the equation of this image?
Can you show me a way to do this without using graph?
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03/11/18

The bearing of C from L is 056° and CL = 4.2km. The bearing of C from T is 318° and CT = 9.6km. Calculate the bearing of T from L?
The bearing of C from L is 056° and CL = 4.2km. The bearing of C from T is 318° and CT = 9.6km. Calculate the bearing of T from L?
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03/10/18

In a triangel with vertices at A(-2,5), B(6,1) and C(1,-2). What is the orthocenter and angle between the altitude and median both drawn from the vertex A.
Please show the complete solution.
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03/07/18

what is the sine function of this graph? https://4.bp.blogspot.com/-1tHai5owr08/VO1FcH4ba5I/AAAAAAAAACQ/9e9B71tExvI/s1600/Graph1.jpg
What is the sine function of this graph?   https://4.bp.blogspot.com/-1tHai5owr08/VO1FcH4ba5I/AAAAAAAAACQ/9e9B71tExvI/s1600/Graph1.jpg
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03/07/18

Related Rate: Kite Problem
A kite 100 ft above the ground moves horizontally at a speed of 14 ft/s. At what rate is the angle (in radians) between the string and the horizontal decreasing when 200 ft of string have been let... more
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03/05/18

Trigonometry Word Problem
The question:   A man standing atop a watchtower sees a ship at an angle of depression of 15 degrees. He looks at the ship again later and see it at an angle of depression of 30 degrees. If the... more
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03/01/18

A hot air balloon is flying in the sky near a 45-meter high building. The angle of depression of the top and the bottom of the building from the operator are 10
degrees and 22 degrees respectively. Find the horizontal distance between the balloon and the building.   thank youu so much in advance geniuss!💓 y'all helped me alot 😊
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02/27/18

Geometry question
(ii)BC is a chord of a circle with centre O and radius a. The mid-point of BC is M, and MO is extended to A, where OA = 2a. Find, to the nearest minute, the angle BOM so that the triangle ABC has... more
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02/24/18

in triangle abc coordinates of a(-3,1) b(4,2) c(3,5) find orthocentre
find centroid and cicumcircle too.
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02/19/18

Find an equation of a Tangent Line to the curve given by y=(1+x)/(1+e^x) at the point (0,1/2)
I just dont know how to do it.
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02/18/18

Can someone please help me with this calculus question please
A man starts walking north at 2 ft/s from a point P. Five minutes later a woman starts walking south at 5 ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 min... more
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02/11/18

Geometry help
write the equation for the circle with center (-16,-5) that has a circumference of 22π
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02/05/18

A diagram shows a sector of a circle with centre O and radius 20cm.
A circle with centre C and radius xcm lies within the sector and touches P,Q,R |<POR|=1.29 radians. (a)By considering the triangle POC, show that x is equal to 7.5cm, correct to one decimal... more
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02/03/18

Altitudes AD,CF of the triangle ABC meet at H. X,Z,P are the midpoints of AB,AC,CH respectively. Prove that angle XZP is a right angle
This is a geometry problem out of the book "A course in Geometry Plain and Solid" by Arthur Weeks and Jackson Adkins
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02/01/18

How fast is it’s distance from the origin changing
An ant is walking left along the curve y=2/x. It’s x-coordinate is changing at 1 unit per minute. When the ant is at point (2,1), how fast is it’s distance from the origin changing?
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01/31/18

TRIG 1/2 ANGLE FORUMLAS
The questions are: "If sin B = -1/3 with B in QIII, find tan B/2. Also find sin B/2   The answer for tan B/2 is-3-2sqrt(2)   The answer for sin B/2 is \sqrt((3+2\sqrt(2))/(6))   These are... more
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01/27/18

Trig/Geometry Help
https://i.imgur.com/mxMdDyA.png (a) Find length of a side of the rhombus to the nearest tenth.(b) Using your answer in part a, find the perimeter of rhombus ABCD.(c) Find the length of diagonal... more
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01/26/18

I'm given the sequence 5^1/2, (5 + 5^1/2), (5 + (5+5^1/2)^1/2). How do I define it recursively?
I can't seem to figure out the relation recursively even if there's clearly a pattern. 
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01/24/18

give an equation in standard form passing through (−3, 3) perpendicular to the line through the origin with slope 0.2
give an equation in standard form passing through (−3, 3) perpendicular to the line through the origin with slope 0.2
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12/29/17

Rewriting trigonometric identities
How do I rewrite (tanθ+secθ)/cosθ in terms of sinθ? (fully simplified)
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