1.

Find the value of (a)cos (3π/4)(b) sec(-23π/6) (c) sin (11π/12) (d) tan(2021π-π/4)​

Answer» ONG>ANSWER:

a) 1/✓2

Step-by-step explanation:

a) cos(3π/4) = cos(π-π/4) = cos(π/4) (Since cos(π[email PROTECTED]) = [email protected]) = 1/√2



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