Question

Find the value of cos 1° • cos 2° ••• cos 100°
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Answer 1

Answer:

0. as cos 90 is 0 and anything into 0is 0

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Answer 2

Answer:

We know,

☆When we multiply any number with zero(0), the answer is always zero (0).

For example,

40 × 0 = 0

(20 + 16 + 1937) × 0 = 0

In the series, cos1°.cos2°.cos3°...............cos100°, cos90° is also included i.e.

=cos1°.cos2°.cos3°...............cos90° cos100°

=cos1°.cos2°.cos3°...............× 0 × cos100°

= 0

So the answer of the given series cos1°.cos2°.cos3°...............cos100°= 0

Step-by-step explanation: