Cos(10).cos(20).cos(40)=? Angles are in Degree
Questions by Prasenjeet from Arvada, CO
sinΘ+sin2Θ=1 then cos2Θ+ cos4Θ=?
If cotAcotBcotC>0 the triangle is ?
If x=ycos(2∏/3)=zcos(4∏/3) , Then xy+yz+zx is equal to ?
A= sin2x + cos4x
Cos2 (2x) - cos2 (6x) = Sin(4x)sin(8x)
Sin2 (6x) - Sin2 (4x) = sin(2x)Sin(10x)
Atomic Weight of two elements 'A' and 'B' respectively are 32 and 16 .They combine to form two gases AB2 and AB4 and the Mixture is found to have a vapor density of 38.4. the no of...
if a piece of iron gain 10% of its weight due to partial rusting into Fe2o3 the % of total iron that has rusted is ?
One mol mixture of Feo and Fe3o4 containing equal moles of each on reaction with excess 02 give 'n' moles of Fe2o3 . Calculate 'N'
if secA=17/8 and cosecB=5/4 then sec(A+B) can have value ?
If 150g of carbon react with 250g of cl2 and the reaction has an 85% yield , how many gram of ccl4 are produced ?
2.5 g of a mixture of a BaO and CaO when heated with h2so4 ,produce 4.713g of the mixed sulphates . Find the percentage of BaO present in the mixture