7 JEE Main 2021 Trigonometric Ratios & Identities previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 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 2 sin π 8 sin 2 π 8 sin 3 π 8 sin 5 π 8 sin 6 π 8 sin 7 π 8 is :
The value of cot π 24 is:
If sin θ + cos θ = 1 2 , then 16 sin 2 θ + cos 4 θ + sin 6 θ is equal to:
The number of integral values of k for which the equation 3 sin x + 4 cos x = k + 1 has a solution, k ∈ R is ____…
cosec 18 ° is a root of the equation:
If 15 sin 4 α + 10 cos 4 α = 6 , for some α ∈ R , then the value of 27 sec 6 α + 8 cosec 6 &#…
A 10 inches long pencil A B with mid point C and a small eraser P are placed on the horizontal top of a table such that…