8 JEE Main 2019 Trigonometric Ratios & Identities previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Trigonometric Ratios & Identities chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Trigonometric Ratios & Identities chapter hub.
The value of cos 2 10 ° – cos 10 °   cos 50 ° + c o s 2 50 ° is
The maximum value of 3 cos ⁡ θ + 5 sin ⁡ θ - π 6 for any real value of θ is :
The value of s i n 10 ° s i n 30 ° s i n 50 ° s i n 70 ° is:
The value of cos ⁡ π 2 2 ⋅ cos ⁡ π 2 3 ⋅ … ⋅ cos ⁡ π 2 10 Y…
For any θ ∈ π 4 , π 2 , the expression 3 sin θ - cos θ 4 + 6 sin θ + cos θ 2 +…
The equation y = s i n x sin ⁡ x + 2 - sin 2 ⁡ ( x + 1 ) represents a straight line lying in:
If c o s α + β = 3 5   , sin ⁡ ( α - β ) = 5 13 and 0 < α , β < π…
Let fk(x)=(1)/(k) ( k x+ k x ) for k=1,2,3, … Then for all x R, the value of f₄(x)-f₆(x) is equal to :