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1. y = cos2θ . 2) cos2θ = 1 - 2sin²θ. 3) x = 2sinθ. 4) x² = 4sin²θ. 5) (1/2)x² = 2sin²θ. 6) y = 1 - (1/2)x².

An advantage of open questions is that respondents are given the freedom to elaborate on their answers providing in-depth accounts compared to closed questions. A disadvantage is that responses may lack r...

One strength is that the behaviourist approach is scientific in its methodology. This is a strength because scientific methods such as laboratory experiments allow great control over variables. This makes...

1 - brain organisation. There are 4 lobes; frontal, parietal, occipital, and temporal. Each lobe has its own function. The brain is split into 2 hemispheres. The left hemisphere is associated with logical...

The question asks us to factorise the quadratic 2x^2 - 4x - 6. All quadratics are of the form ax^2 + bx + c, so we have a = 2, b = -4, c = 6. I would advise approaching it using the prod...