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How is the Hawaiian Island chain forming?

The Hawaiian Island chain is a collection of volcanic islands in the Pacific Ocean that have formed over a hotspot in the centre of a tectonic plate, rather than at a plate boundary (where volcanoes commonly...
RM
Answered by Romy M. • Geography tutor
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Differentiate with respect to x: x*cos(x)

Firstly, x cos(x) is a product of two functions of x. Therefore we can use the product rule to work out the derivative of the whole function. Differentiating each part makes it easier to visualize the formul...
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Answered by Stefan S. • Maths tutor
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What is the action of Insulin in glucose regulation?

Insulin is a hormone that is produced by beta cells in the Islets of Langerhans in the pancreas. A hormone is a chemical substance that is transported in the blood and stimulates particular cells to perform ...
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Answered by Nicole M. • Biology tutor
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To what extent does the religion you have studied adequately insist on human beings taking responsibility for the environment?

The chosen religion is Christianity. There are two conflicting Christian approaches to environmental responsibility. Namely, the concepts of stewardship and dominion. Stewardship is the theological belief th...
HW
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Prove cosec2A-cot2A=tanA

Cosec2A - cot2A= tanA Left hand side=1/sin2A - cos2A/sin2A =(1- cos2A)/sin2A =(1-(1- 2 sin^2⁡ A)/ 2sinAcosA =(1-1 + ( 2 sin^2⁡ A))/ 2sinAcosA =sinA/cosA =tanA Therefore left hand side of the equation is equa...
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Answered by Sherin T. • Maths tutor
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