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How do I find the missing length using trigonometry?

First of all, label the sides in the right-angled triangle. Then, write out SOHCAHTOA, using three small triangles. Next, tick off the letters of the sides that either have a number, or the letter x, written...
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Answered by Patrick L. • Maths tutor
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Describe how an action potential stimulates synaptic release of neurotransmitters. (5 marks)

action potential depolarises the synaptic terminal this activates the voltage gated calcium channels Calcium ions diffuses into the cell down the electrical gradient Calcium ions stimulate the release of the...
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Answered by Sofia P. • Biology tutor
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Distinguish between economic liberalism and social liberalism.

Economic liberalism is a species of classical liberalism and provides the basis for neo-classical economic theory whereas social liberalism is a species of modern liberalism and argues that an unregulated ma...
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Answered by Megan E. • Politics tutor
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Bernard says that a mass executing uniform circular motion is not accelerating as it's speed is not changing. Which parts of his statement are correct and which are false. For those which are false state why they are and give the correct version.

Correct:For a mass which is executing uniform circular motion, it's speed doesn't change. False:(1) A mass which is executing uniform circular motion is not accelerating Correction to (1) Acceleration is def...
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Answered by Oliver C. • Physics tutor
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Show that the derivative of tan(x) is sec^2(x), where sec(x) is defined as 1/cos(x). [Hint: think of tan(x) as a quotient of two related functions and apply the appropriate identity]

tan(x) is defined as sin(x)/cos(x) For a function which can be written as f(x) = u(x)/v(x) the quotient rule can be appliedThe quotient rule states f ' (x) = (u'v-v'u)/v^2 Applying this to the formula for ta...
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Answered by Oliver C. • Maths tutor
4226 Views