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Given that 2cos(x+50)°=sin(x+40)° show tan x° = tan 40°/3

The formulae for the sum the sine and cosine of two angles are: 2(cos x°cos 50°- sin x°sin 50°)= sin x°cos 40°+cos x°sin 40°cos 50°= sin 40°sin 50° = cos 40° Therefore, 2 cos x°sin 40°- 2 sin x°cos 40° = ...

PT
Answered by Prashasti T. Maths tutor
7706 Views

‘Transnational corporations only have a positive impact when extracting resources from host countries’. To what extent do you agree with this view?

Introduction:Transnational corporations (TNCs) are organisations which operate in multiple countries through foreign direct investment, offshoring of resources and/or outsourcing of labour. In term...

LF
Answered by Luke F. Geography tutor
2723 Views

Integrate x * sin(x) with respect to x by using integration by parts

The general formula for integration by parts to integrate something of the form u * v' is: u * v - (integral)[ (u' * v) dx ]. Thus we first need to write x * sin(...

JW
Answered by Jamie W. Maths tutor
5235 Views

Can you explain the main events that happen during an action potential?

What is an action potential? When a stimulus of sufficient size is detected, it causes a temporary reversal of charges either side of the axon membrane. It also causes the channels in the axon memb...

DN
Answered by Dominique N. Biology tutor
2693 Views

write 2(sin^2(x)- cos^2(x)) + 6 sin(x) cos(x) in terms of cos(2x) and sin(2x)

We use the following double angle formulae cos(2x) = cos^2(x) - sin^2 (x) and sin(2x) = 2sin(x)cos(x) to see that 2(sin^2(x)- cos^2(x)) + 6 sin(x) cos(x) = -2-(sin^2(x)+ cos^2(x)) + 3*2 sin(x) cos(x) = -2...

NR
Answered by Nicola R. Maths tutor
5392 Views

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