3 years ago

Evaluate: (sec²37° -cot²53°)tan21°tan69°-sin51°cos49°-cos51°sin49°

Mathematics

1 answer:

olchik [2.2K]3 years ago

8 0

= 1 * 1 - (sin (51 + 49)

= 1 - 0.9848
= 0.0152 answer

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