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# How to find value

Cos(10).cos(20).cos(40)=?   Angles are in Degree

# How to solve

sinΘ+sin2Θ=1   then cos2Θ+ cos4Θ=?

(31/2)sinx+cosx

# The expression lie between

5cosΘ+3cos(Θ+pi/3)+3

12sinΘ-9sin2Θ

# What is Triangle

If cotAcotBcotC>0 the triangle is ?

# What is value of

If x=ycos(2∏/3)=zcos(4∏/3) , Then xy+yz+zx is equal to ?

A= sin2x + cos4x

5sin2x+4cos2x

# Prove That

tan4x=(4tanx(1-tan2x))/(1-6tan2x+tan4x)

# How to This Eqa

Cos2 (2x) - cos2 (6x) = Sin(4x)sin(8x)

# How to Prove

Sin2 (6x) - Sin2 (4x) = sin(2x)Sin(10x)

|x-2|-|3x-10|>-6

|x-1|+|x|+|x+1|=2

# Find No of Moles

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...

# Find % of Fe

if a piece of iron gain 10% of its weight due to partial rusting into Fe2o3 the % of total iron that has rusted is ?

# Calculate N

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 secA=17/8 and cosecB=5/4 then sec(A+B) can have value ?