NDA2020MathematicsTrigonometric Ratios & IdentitiesActual
Paragraph: Read the following information and answer: Let = =15^ . Question: What is the value of + ?
Options
- A1 2
- B1 2 2
- C3 2 2
- D3 2
Correct answer
D. 3 2
Step-by-step solution
= =15^ (given) Now, + aligned & = 2 ( 1 2 + 1 2 ) = & = 2 ( 45^ + 45^ ) & = 2 ( ( +45^ ) )= 2 (15^ +45^ ) & = 2 60^ = 2 3 2 = 3 2 aligned