The image shows an open book lying on a surface, likely a table. The book contains text and a table related to trigonometry. The text on the right side of the page describes trigonometric ratios and their reciprocals, including the definitions of secant and cosecant. The table, which starts in the middle of the page, displays trigonometric functions and their signs in different quadrants (1st, 2nd, 3rd, and 4th, represented by angles like $\theta$, $180-\theta$, $180+\theta$, and $360-\theta$). The left side of the page contains the beginning of a sentence: "The table below shows the value of some trigonometric functions of frequently encountered angles." A page number "68" is visible on the bottom left corner. The lighting suggests an indoor environment. There is no information in the image that can identify the location as Jalingo, Nigeria. in Jalingo, Nigeria

$The image shows an open book lying on a surface, likely a table. The book contains text and a table related to trigonometry. The text on the right side of the page describes trigonometric ratios and their reciprocals, including the definitions of secant and cosecant. The table, which starts in the middle of the page, displays trigonometric functions and their signs in different quadrants (1st, 2nd, 3rd, and 4th, represented by angles like $\theta$, $180-\theta$, $180+\theta$, and $360-\theta$). The left side of the page contains the beginning of a sentence: "The table below shows the value of some trigonometric functions of frequently encountered angles." A page number "68" is visible on the bottom left corner. The lighting suggests an indoor environment. There is no information in the image that can identify the location as Jalingo, Nigeria.$

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Jun 28, 2026

Jalingo, Nigeria

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The image shows an open book lying on a surface, likely a table. The book contains text and a table related to trigonometry. The text on the right side of the page describes trigonometric ratios and their reciprocals, including the definitions of secant and cosecant. The table, which starts in the middle of the page, displays trigonometric functions and their signs in different quadrants (1st, 2nd, 3rd, and 4th, represented by angles like $\theta$, $180-\theta$, $180+\theta$, and $360-\theta$). The left side of the page contains the beginning of a sentence: "The table below shows the value of some trigonometric functions of frequently encountered angles." A page number "68" is visible on the bottom left corner. The lighting suggests an indoor environment. There is no information in the image that can identify the location as Jalingo, Nigeria.

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