Question

find the principal value of cos^-1(1/√2)​

Answer 1

Answer:

earn , learn, control, take, report, gallop, come , paralyze, replace, manipulate

Price of essential is such a crucial factor that it directly (a) — the life and living of the majority people. The measures so far (b) -- by the government (c) -- appreciation from the people. But it is (d) - by despair as the majority of the people () - under the cursing burden of (f) - prices. It (g) that the business syndicate (h) - the market prices and the retailers (1) out of their evil lust. Moreover, the enforcement bodies are () - to have been involved in illegal extortionist.

Answer 2

cos-1(-1/√2) Therefore, principal value of cos-1(-1/2) = 3π/4.