Question

cosec² 45-sin² 45=?​

Answer 1

cosec 45= √2

sin 45= 1/√2

cosec² 45 - sin² 45 = (√2)² - (1/√2)²

                                = 2 - 1/2

                                = 4-1 / 2

                                = 3/2

Answer 2

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