Question
Out of 8 white marbles, 5 blue marbles, in how many ways
we select one or more marbles?Solution
We can select any combination of balls from 0 to 9 White marbels and from 0 to 5 blue marbels The total number of ways is given by: (8 + 1) × (5 + 1) = 9 × 6 = 54 ways. 9 × 6 = 54 54 - 1 = 53
A man observes the top of a tower at an angle of elevation of 30°. He walks 100 meters closer to the tower, and the angle of elevation becomes 60°. If...
- If cosec [180° − (3q/2) ] = √2, 0° < q < 90°, then find the value of {(2/√3) X cos q - 4 cos 3q}.
The angle of elevation of the top of a 70 feet tall tower from the initial position of a person on the ground was 30°. She walked towards the tower in ...
If cosx/siny = n and cosx/cosy = m, then the value of cos 2 y is:
1. m 2 /(m 2 + n 2 )
2. 1/(m ...If sin x + cos x = √2 sin x, then the value of sin x - cos x is:
Find the Value of Sin⁶`Theta` + Cos⁶`Theta` + 3Sin² `theta` Cos²`Theta`
Solve the following trigonometric expression:
If cos θ + sec θ = √5, then the value of cos³ θ+ sec³ θ is:
If 0 ≤ θ ≤ 90°, and sin(2 θ +50°) = cos (4 θ + 16°), then what is the value of θ (in degrees)?
If tan θ = 4/3 and θ is an acute angle, find the value of sin θ + cos θ.
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