Question
If cos A = 4/5 and A is an acute angle, find the value
of 3 tan A + 4 sec A.Solution
Given cos A = 4/5. Using the identity sin² A + cos² A = 1, we find sin A = √(1 - (4/5)²) = √(1 - 16/25) = √(9/25) = 3/5. Now, tan A = sin A / cos A = (3/5) / (4/5) = 3/4, and sec A = 1 / cos A = 5/4. So, 3 tan A + 4 sec A = 3 * (3/4) + 4 * (5/4) = 9/4 + 20/4 = 29/4 = 7.25. Answer: c) 7.25
How many persons are visited between W and Q?
Statements:
B ≥ K ≤ C; Q > K > X; M = Q < P
Conclusions:
I. P > X
II. C ≥ M
Which of the following group is false?
Statements:
Only a few Boy are Male.
Some Male is Married.
No Married is Happy.
Only Happy is Single.
Conclusions:...
Who among the following person stays on the ground floor?
Who lives immediately above E in the same flat number?
How many persons live between L and Y?
A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
17, 21, 46, 52, 101, ...
Who among the following celebrated his birthday immediately before H?
Who among the following attends music class on Wednesday?
