TRIGONOMETRY
1. The value of cosOºx cos 1°x cos2ºx....cos89° cos 90° is.........
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Answer:
0
Step-by-step explanation:
cos 90⁰=0
(cos0⁰)×(cos1⁰)x(cos2⁰).......(cos89⁰)×(0)
we know that if we multiply any no. by 0 then whole no. become zero
cos90⁰=0 so if we multiply any value by cos90⁰ then all no. becomes zero
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