Question
Select the odd group of numbers. (NOTE: Operations
should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.,43 - Operations on 43 such as adding /subtracting /multiplying etc. to 43 can be performed. Breaking down 43 into 4 and 3 and then performing mathematical operations on 4 and 3 is not allowed)Solution
The pattern followed here is:  Logic: First number x 10 = Second number & Second number × 20 = Third number.  (3 - 30 - 600) → 3 × 10 = 30 & 30 x 20 = 600 (Correct) (5 - 50 - 2200) → 5 × 10 = 50 & 50 × 20 = 1000 (not equal to 1500) (Incorrect) (8 - 80 - 1600) →8 × 10 = 80 & 80 x 20 = 1600 (Correct) (9 - 90 - 1800) → 9 × 10 = 90 & 90 × 20 = 1800 (Correct)  Hence, the correct answer is (B).
- If 2 sin x = √3, then the value of x:
- Find the value of sin²10° + sin²80° + cos²15° + cos²75°.
Simplify the following trigonometric expression:
10 cos 71° sec 19° − 4 cot 62° tan 28°If cot5A = tan(3A-14˚), find the value of A? Given that 5A and 3A-14˚ are acute angles.
- If X = 15°, find the value of:
cos²(2X) + sin²(3X) - tan²(2X) Find the maximum value of 25 sin A + 11 cos A.
Determined the simplified value of the given expression:(1 - sin2Â q) X (sec q + tan q) X (sec q - tan q) X cosec2Â q
If sin θ + cos θ = 1.2, find the value of sin θ. cos θ.
- If cos θ = (4x² – 1)/(1 + 4x²) then find the value of sin q.
tan 4˚ × tan 43˚ × tan 47˚ × tan 86˚ = ?