Question
A can fabricate a divider in 15 days , while B alone can
assemble it in 25 days, If they construct it together and get an installment of Rs 7000, then find share of A.Solution
A's 1 days work = 1/15 B's 1 day work = 1/25 Proportion of their shares = 1/15:1/25 = 5:3 A's share = (7000 x 5/8) = Rs. 4375
If 8sin²x + 4cos²x − 6 = 0, then find the value of sinx, given that 0° < x < 90°.
- If X = 10°, find the value of:
cos²(3X) + sin²(6X) - tan²(3X) - Determine the value of following trigonometric expression:

If cos 2A = 3, then find cos A
cot 13Ëš Â
 cot 14˚  ...- Find the maximum value of (11sin A + 60cos A).
If sec(2A + B) = 2 and cos(A + B) = (1/√2) , find the value of {sec 2B + tan (A + B) } given that 0o < A, B < 90o
If cos3B = sin(0.5B + 6°), then find the measure of 'B'.
sin2 4˚ + sin2 6˚ + sin2 8˚ + sin2 10˚ + ……… + sin2 86˚ =?
Find the exact value of cos120°