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8.8 Trignometic Ratios and their Values
Answer the following questions. Also write at least 10 examples of your own.
: Evaluate (cosec θ - cot θ)/2 cot θ, when sin θ = 3/5
: if cos θ = 3/5, find the value of (sin θ tan θ - 1)/2 tan
: If tan θ = a/b, find the value of the expression (cos θ + sin θ)/(cos θ - sin θ)
: If cot θ = 1/
3, find the value of (1 - cos
θ)/2 - sin
: If sin B = 1/2, find 3 cos B - 4 cos
: If tan A = 2, evaluate sec A.sin A + tan
A - cosec A
: If sec θ = 13/5, evaluate (2 sin θ - 3 cos θ)/(4 sin θ - 9 cos θ)
: if sec θ = 5/4, find (sin θ - 2 cos θ)/(tan θ - cot θ)
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