The value of cos 1° cos 2° cos 3° ... cos 179° is

The value of cos 1° cos 2° cos 3° ... cos 179° is

(A)1/√2

(B) 0

(C) 1

(D) –1

Monjur Alahi

7 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Answer is (B)

Since cos 90° = 0, we have

cos 1° cos 2° cos 3° …cos 90°… cos 179° = 0

7 views Answered 2023-02-05 15:29

Related Questions

If the value of Marginal Propensity to Save is 0.4, what will be the value of Investment Multiplier?

1 Answers 4 Views

Mention the pH value below which tooth decay begins. How this fall below this value ? Explain the ill effect of the acidic medium in the mouth.

1 Answers 5 Views

If the rms current in a 50 Hz ac circuit is 5 A, the value of the current 1/300 seconds after its value becomes zero is

1 Answers 4 Views

Show that 2 sinβ^2 + 4 cos (α + β) sin α sin β + cos 2 (α + β) = cos 2α

1 Answers 4 Views

3 (sin x – cos x)^4 + 6 (sin x + cos x)^2 + 4 (sin^6 x + cos^6 x) = _______.

1 Answers 4 Views

Which of the following is correct ? (1) cos 1 > cos 2 (2) cos 1 < cos 2 (3) cos 1 = cos 2 (4) none of these

1 Answers 6 Views

The sum of all solutions of the equation cos x. cos(pi/3 + x) . cos(pi/3 - x) = 1/4, x ∈ [0, 6pi]

1 Answers 4 Views

If cos (α + β) = 0, then sin (α – β) can be reduced to (A) cos β (B) cos 2β (C) sin α (D) sin 2α

1 Answers 4 Views

If sinA + sin^2 A = 1, then the value of the expression (cos^2 A + cos^4 A) is (A) 1 (B) 1/2 (C) 2 (D) 3

1 Answers 4 Views

The value of the expression(sin^2 22°+ sin^2 68°)/(cos^2 22°+ cos^2 68°) + sin^2 63 cos 63° sin27° is(A) 3 (B) 2 (C) 1 (D) 0

1 Answers 5 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)