Question
A and B can complete a work together in 36 days. If A
alone can complete one-fourth of the work in ‘x’ days and remaining work is completed by B alone in 3x days, then find the value of x.Solution
Time taken by A to complete the work = (x × 4) = 4x days Time taken by B to complete the work = (3x × 4/3) = 4x days According to question, => (1/4x) + (1/4x) = 1/36 => (1 + 1)/4x = 1/36 => 4x = 72 => x = 18
What is the simplified value of the given expression?
3(sin² 30° + sin² 60°) + 6sin 45° - (3sec 60° + cot 45°)
- Find the simplified value of the expression:sin 2 45 o Ā + sin 2 60 o Ā - (1/3) X tan 2 60 o
If θ is a positive acute angle and cos² θ + cosā“θ = 1, then the value of tan²θ + tanā“θ is?
Find the value of the given trigonometric expression:
(sin 15°cos 75° + cos²15°) à sin 30° + (cos 60°tan 45°) à sec 60°
...Find the maximum value of (20sin A + 15cos A).
Find the exact value of cos120°
- If sin(A + B) = ā3/2 and cos(A + 2B) = 1/2, where 0° < A, B < 90°, then find the value of tan(2A).
If cosec (2A + B) = 2 and cosec (A + B) = 1, find the value of (3A ā B).
A tower is 60 meters high. From a point on the ground, the angle of elevation of the top of the tower is 30°. Find the distance of the point from the b...
- Find the maximum value of (12sin A + 16cos A).