Let α = β = 15°.

What is the value of sin α + cos β?

What is the geometric mean of the sequence 1, 2, 4, 8, …., 2^n ?

ABCD is a parallelogram. If AB = a, BC = b, then what is BD…

The vector 2j – k lies :

The magnitude of the scalar p for which the vector p(-3i – 2j + 13k)…

What is the value of λ for which (λi + j – 5k)×(3i – 2j…