Question
Choose the most appropriate option for blank
76.Solution
The correct word is ‘curbing’. It means ‘controlling or limiting’. The words ‘increasing’ and ‘surging’, though grammatically correct, do not fit contextually. This is because the purpose of lockdown was to control the infection rate.
A 16-meter-long rope is stretched from the ground to the top of a house, forming a 30° angle with the ground. Determine the height of the house.
Calculate the value of sec75o
If cosec (2A + B) = 1 and cosec (A + B) = (2/√3), find the value of (4A – B).
- Determine the value of :

If 2x = cosec @ and 4/x = cot @ then the value of 2(x ² - 1/x ² ) is
If x = 4 cos A + 5 sin A snd y = 4 sin A – 5 cos A, then the value of x2+y2 is :
Find the value of the given trigonometric expression:
(sin 10°cos 80° + cos²10°) × sin 30° + (cos 60°tan 45°) × sec 60°
...If 'θ' is an angle less than 120°, what is the value of 'θ' if it satisfies the equation 3cos2θ = 2 + sin2θ.
...Find the value of `1/2`  cosec 10  - `2/(cosec 70)`  ?
- If sin(A + B) = sinAcosB + cosAsinB, then the value of sin75° is