Question
Two cards are drawn together from a pack of 52 cards.
What is the probability that one is a spade and one is a heart?Solution
There are 13 cards of spade & 13 cards of heart in a pack of 52 cards. The probability that the card one is a spade and one is a heart = 13C1 x 13C1/(52C2) = 13/102
Find the value of sin(θ) if 2sinθ = tanθ, for 0 < θ < 90°.
The value of (3tan10°-tan³10°)/(1-3tan²10°) is equal to
- Find the value of sin²18° + sin²72° + cos²63° + cos²27°.
- Find the maximum value of (15sin A + 12cos A).
∆ PQR is right-angled at Q. If ∠R = 60º, then find the value of cosec P.
If cosec2A = (sin60o + tan45o X sec245o), then find the value of sin2A.
If √3 tan x = 3, then the value of x:
If sin5A = cos(2A+20°), then what is the value of A? Given that 5A is an acute angle.
