If x = r sinA cosC, y = r sinAsinC and z = r cosA, then x^2 + y^2 + z^2 = ?
(A) r
(B) r^2
(C) 2r^3
(D) r^3
Due to an increase of 25% in the price of tea a man can buy 3 kg less for Rs. 600. find the present price of tea. @mba__
If (tanθ+cotθ)/ (tanθ−cot θ )= 2, (0
then the value of sin θ is
(a) 2 /√3
(b) √3/2
(c) 1 /2
(d) 1
A reduction of 20% in the price of sugar enables a person to buy 5 kg more sugar for rs 400. find the difference between original and present price.
a reduction of 20% in the price of salt enables a person to buy 4 kg more salt for rs 100. find the decreased price of salt.
If sec^2θ+tan^2θ = 7 /12 , then sec^4 θ - tan^4 θ
(a) 7/12
(b) 1/ 2
(c) 5 /12
(d) 1
If 2 - cos^2 θ = 3 sin θ cos θ, sin θ ≠ cos θ
then tan θ be
(a) 1/2
(b) 0
(c) 2/3
(d) 1/3
If A and B are complementary angles, then the value of Sin A cos B + cos A Sin B - tan A tan B + sec^2 A - cot^2 B is
(a) 2
(b) 0
(c) 1
(d) -1
If sin θ + cos θ = √2 cos (90- θ), then cot θ is
(a) √2+1
(b) 0
(c) √2
(d) √2-1
plzz explain
If x sin^3 θ + y cos^3 θ = sin θ cos θ and x sin θ = y cos θ, sin θ ≠ θ, cos θ ≠ 0, then x^2 + y^2 is
(a) 1 /√2
(b) 1 /2
(c) 1
(d) √2
The value of (1 + sec 20° + cot 70°)(1-cosec20° + tan 70°)
(a) 0
(b) -1
(c) 2
(d) 1
The area was blocked ___ during the demonstration.
The problem boils __ to a lack of money
few horses broke ____ from the paddock.
1) It was decided to break __diplomatic
relations with that country.
2) She broke ___ in the middle of a sentence 3.Rioting broke __ as a result of the strike.
You pretended to be a journalist and he believed you?
I never thought you'd bring that __!
Mary decided to brush up __her Spanish before going to South-America.
The fuse has burnt ____.
Two sides of a rectangle are measured.One of the sides (length) was measured 10% more than its actual length and the other side(width) was measured 5% less than its actual lenth.The % error in measure obtained for the area of the rectangle is
A work complete by 120 labourers in 15days.How many labourers will complete the same work in 10 days?
No OA.