Question
In the questions given below, there are three
statements followed by two conclusions I and II. You have to take the three given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts. Statements: Only a few Tree is Herb All Herb is Stem No Stem is Root Conclusion: I. Some Tree is not Root II. No Root is HerbSolution
Only a few Tree is Herb (I) + All Herb is Stem (A) → Some Tree is Stem (I) + No Stem is Root (E) → Some Tree is not Root (O). Hence conclusion I follows. All Herb is Stem (A) + No Stem is Root (E) → No Herb is Root (E) → Conversion → No Root is Herb (E). Hence conclusion II follows.
∆ PQR is right-angled at Q. If ∠R = 60º, then find the value of cosec P.
If tan² 45°- cos² 60° x sin 45° cos 45° cot 30°, then find the value of 'x'.
The value of (3tan10°-tan³10°)/(1-3tan²10°) is equal to
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sin2 7 ° + sin2 8 ° + sin2 9 ° + sin2 10 ° + ……… + sin2 83 ° = ?
...If cos1.5B = sin(B + 5°), then find the measure of 'B'.
- If sin(A + B) = 1/2 and cos(A + 2B) = √3/2, where 0° < A, B < 90°, then find the value of tan(2A).

cos (sec-1 x) is equal to –
If A + B = 450 , then the value of 2(1 + tanA) (1 + tanB) is: