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The value of cos h^-1 (sec x) is

1) log [1 + sin x] / cos x 2) log [1 – sin x] / cos x 3) log... View Article

1) 2 cot h-1 (cosec2 (x / 2) – 1) 2) 2 cos h-1 (cosec2 (x / 2) – 1)... View Article

1) log (2 + √18) 2) log (3 + √8) 3) log (3 – √8) 4) log (√8 + √27)... View Article

1) log (√3 + √2) 2) log (√3 + 1) 3) log (2 + √3) 4) None of these Solution:... View Article

1) sin h-1 3 2) cos h-1 3 3) tan h-1 3 4) cot h-1 3 Solution: (2) cos h-1... View Article

1) 2 2) 1 3) 3 4) 5 Solution: (1) 2 cos h-1 x = log (2 + √3) cos... View Article

1) tan h x 2) cot h x 3) sin h x 4) cos h x Solution: (3) sin h... View Article

1) 2πi 2) cot h x 3) 4πi 4) cos h x Solution: (3) 4πi The period of sin h... View Article

1) 6πi 2) 2πi 3) πi 4) 9πi Solution: (1) 6πi Since the period of coshθ is 2πi, the period... View Article

1) 1 – i 2) – 1 + i 3) – 1 – i 4) 1 + i Solution: (3)... View Article

1) – i / 2 2) i / 2 3) i √3 / 2 4) – i √3 / 2... View Article

1) eix 2) e-ix 3) ex 4) e-x Solution: (4) e-x cos ix + i sin ix = cos hx... View Article

1) -1 2) i 3) 0 4) 1 Solution: (1) -1 sec h (iπ) = 2 / [eπi + e-πi]... View Article

1) cos x cos hy 2) sin x sin hy 3) – sin x sin hy 4) cos x sin... View Article

1) 1 / e 2) e 3) 1 / e2 4) e2 Solution: (4) e2 cos h2 + sin h2... View Article

1) – sin 2θ 2) sec 2θ 3) cos 3θ 4) cos 2θ Solution: (2) sec 2θ cosh 2x =... View Article

1) 2 cot {h (x + y)} 2) tan h {[x + y] / 2} 3) cot h {[x +... View Article

1) a 2) b 3) [a + b] / [1 – ab] 4) [a – b] / [1 + ab]... View Article

1) 0.96 2) 0.48 3) 0.64 4) None of these Solution: (1) 0.96 sin (2 sin-1 0.8) = sin (2... View Article

1) π 2) π / 4 3) – π / 2 4) π / 2 Solution: (4) π / 2 sec-1... View Article