Question
What is the purpose of including a control group in
scientific experiments? ÂSolution
A control group is essential in experiments to serve as a benchmark, helping researchers to measure the true effect of the independent variable on the experimental group.
More Previous Year Paper Questions
Find the value of the given expression.
2 × (cos 60° – tan 45° + sec 60°)
What is the value of (4/3) cot2 (p/6) + 3 cos2 (150o) – 4 cosec2 45o + 8 sin (p/2)?
...
If cosx/siny = n and cosx/cosy = m, then the value of cos 2 y is:
1. m 2 /(m 2 Â + n 2 )
2. 1/(m ...- If sin 2a = (5/9), then find the value of (sin a + cos a).
If tanθ = x then find the value of cos 2θ?
If cot5A = tan(3A-14Ëš), find the value of A? Given that 5A and 3A-14Ëš are acute angles.
If sin θ + cos θ = 1.2, find the value of sin θ. cos θ.
If cos2B = sin(1.5B + 20o), then find the measure of 'B'.
- If 2cos²A + 3sin²A = 13/5, then find the value of (sec²A - 1)
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