Question
What is the maximum limit to invest in NSC (National
Savings Certificates)?Solution
NSC comes with a fixed maturity period of five years. There is no upper limit for investments in the National Saving Certificates, but investments of up to Rs 1.5 lakhs in NSCs are liable for a tax reduction under section 80C of the Income Tax Act.
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°