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Write 9sin(x) + 12 cos(x) in the form Rsin(x+y) and hence solve 9sin(x) + 12 cos(x) = 3

9sin(x) + 12 cos(x) = Rsin(x+y) =R(sin(x)cos(y)+cos(x)sin(y))= (Rcos(y))sin(x) + (Rsin(y))cos(x)Therefore by matching the coefficientsRsin(y)=12, Rcos(y)=9 [1]SoRsin(y)/Rcos(y) = 12/9 = 4/3, therefore tan...

JH
Answered by James H. Maths tutor
5842 Views

Translate the following passage into Spanish: When I was young, I used to visit my granddad every Friday. One day, I visited him with my mum. We drank coffee and watched the football. There isn't much to do in my granddad's house.

Cuando era pequeñ@, yo visitaba a mi abuelo cada viernes. Un día, lo visité con mi madre. Bebimos cafe y vimos el fútbol. No hay mucho que hacer en la casa de mi abuelo.

AG
Answered by Anna G. Spanish tutor
2481 Views

Explain what is meant by a Liberal Democracy

Free and fair elections- Rousseau, social contractchecks and balances/ separation of powers- jeffersonpotential to talk about constitutionalism - could use Madison as a thinker/-Beetham- argued that for a...

FL
Answered by Freya L. Politics tutor
2028 Views

"In spite of more than US$1 trillion in aid to Africa over the last 50 years, GDP per capita growth in Africa decreased and was for many years even measured in negative figures. Aid is more of a hindrance to LEDCs". Discuss.

With any question of this sort it is important to try to break it down and answer it logically. However, it is equally important to arrive at a conclusion with a clear position on the statement that is ou...

AP
Answered by Angus P. Geography tutor
3143 Views

'Economic successes was the most important reason for Conservative electoral dominance in the period from 1951-64.' How far do you agree?

When given an essay question, the best place to start is by reading the question carefully, by picking out key words and any assumptions the question appears to be making. In this particular example, the ...

JG
Answered by Joanna G. History tutor
4049 Views

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