Question
If x = r sin A cos B, y = r sin A sin B and z = r cos A,
then find x² + y² + z².Solution
x = r sin A cos B, y = r sin A sin B z = r cos A Now, x² + y² + z² = (r sin A cos B) ² + (r sin A sin B) ² + (r cos A)2 = r2 sin2 A (cos² B + sin² B) + r2 cos² A = r² sin² A + r2 cos² A = r² (sin² A + cos² A) = r2
From the given alternative words, select the word which cannot be formed using the letters of the given word only once.
DEMOCRATIZATION
Statements: U > H < Y > S = B ≥ Z > F ≥ Q
Conclusion
I: Z < Y
II: B > Q
Statement: F ≤ G; F ≤ I; G = Q; I < T
Conclusion:
I. T ≤ G
II. Q ≥ T
Find which one of the given words cannot be made from the letters of the given word.
‘ SHAMEFUL ’
...In the following question, select the word which can be formed using the letters of the given word 'DESCENT'.
In the following question, select the word which cannot be formed using the letters of the given word.
TROPICAL
From the given alternatives select the word which cannot be formed using the letters once of the given word
SECULARIZATION
...Arrange the following words as per order in the dictionary:
1. Euphrasy
2. Eupepsy
3. Euphonics
4. Eugenics
5. Euphony
Which among the following words cannot be formed using the letters of the given word only once?
BIOTECHNOLOGY
If ‘P + Q’ means ‘P is father of Q’, ‘P – Q’ means ‘P is mother of Q’, ‘P * Q’ means ‘P is brother of Q’ and ‘P % Q’ means...
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