Question
A metal ball of volume 0.02 m³ is immersed fully in
water. Find buoyant force. (Take g=10 m/s2, ρ = 1000 kg/m3)Solution
The buoyant force is given by Fb= ρgV , where V is the volume of the displaced fluid. So, Fb = 1000 x 10 x 0.02 = 200 N
Find the value of sin 240 °
- Find the simplified value of the expression:sin 2 45 o + sin 2 60 o - (1/3) X tan 2 60 o
In an election between two candidates, 16% of the total votes were invalid. One candidate received 58% of the valid votes, and the other candidate recei...
If cos2B = sin(1.5B + 6°), then find the measure of 'B'.
- Find the value of sin²18° + sin²72° + cos²63° + cos²27°.
- If sin(A + B) = 1/2 and cos(A + 2B) = √3/2, where 0° < A, B < 90°, then find the value of tan(2A).
What is the simplified value of the given expression?
2(sin² 15° + sin² 75°) + 4sin 30° - (2sec 60° + cot 45°)
What is the value of [tan2 (90 – θ) – sin2 (90 – θ)] cosec2 (90 – θ) cot2 (90 – θ)?
...- If sin 2a = (3/2), then find the value of (sin a + cos a).
If sec a + tan a = 5/2, find the value of sin a.