Question
A complex and rather resistant mixture of brown or black
amorphous and colloidal substances modified from the original tissues is termed as …………………..Solution
Humus: A complex and rather resistant mixture of brown or black amorphous and colloidal substances modified from the original tissues or synthesized by the various soil organisms.
- If cos2B = sin(1.5B - 36 o ) , then find the measure of 'B'.
If sin(x + y) = 1 and sin(x - y) = (1/2), then what is the value of sinx cosx + 2sin2y + cos2y?Â
cos (sec-1 x) is equal to –
If 2x = cosec @ and 4/x = cot @ then the value of 2(x ² - 1/x ² ) is


The minimum value of 9 cos2 θ + 36 sec2 θ isÂ
If (1+sinθ)/cosθ = x, then find the value of secθ?
1.Â
If (sinx + siny) = a and (cosx + cosy) = b, then find the value of (sinx siny + cosx cosy).
[A] (a²+b²-2)/ 2
[B] (a2-b2<...
- Find the value of sin²40° + sin²50° + cos²60° + cos²30°.