In a sense, trigonometry sits at the center of high school mathematics. It originates in the study of geometry when we investigate the ratios of sides in similar right triangles, or when we look at the relationship between a chord of a circle and its arc. It leads to a much deeper study of periodic functions, and of the so-called transcendental functions, which cannot be described using finite algebraic processes. It also has many applications to physics, astronomy, and other branches of s...

Edgar Award Finalist: The gripping account of an assassination on US soil and the violent foreign conspiracy that stretched from Pinochet's Chile to the streets of Washington, DC, with a new introduction by Ariel Dorfman.On September 10, 1976, exiled Chilean leader Orlando Letelier delivered a blistering rebuke of Augusto Pinochet's brutal right-wing regime in a speech at Madison Square Garden. Eleven days later, while Letelier was on Embassy Row in Washington, DC, ...

A remarkable vision for how Christians can live with countercultural gentleness in a perpetually angry, attacking, outraged time.“Wow! What a great book!" -- Max LucadoIn a defensive and divided era, how can followers of Jesus reveal a better way of living, one that loves others as God loves us? How can Christians be the kind of people who are known, as Proverbs puts it, to "turn away wrath?" Scott Sauls's compelling new audiobook points th...

Find the freedom from regret, hurt, and fear that God wants for you while discovering joy, relief, and hope as you become the beautiful human he created you to be.We all carry regret, hurt, and fear. These are burdens that weigh us down and make us feel trapped.In twenty-five years of pastoral ministry, Scott Sauls has come alongside countless individuals and communities through weary seasons and circumstances. From his own seasons of regret, hurt, and fear...

"God won't give you more than you can handle." This is one of the most common and least helpful reassurances floating around Christian circles. It is anything but biblical. The truth is that God does allow a lot more than we can handle. But why?Nate Pyle has walked through tragedy in his own life--professional uncertainty, the intense impact of mental illness, and the struggle to build a family because of a lost pregnancy, infertility, and adoption. As a pastor, Nate has c...

A "well-told" insider account of the State Department's twenty-first-century struggle to defend America against malicious propaganda and disinformation ( The Washington Post).Disinformation is nothing new. When Satan told Eve nothing would happen if she bit the apple, that was disinformation. But today, social media has made disinformation even more pervasive and pernicious. In a disturbing turn of events, authoritarian governments are increasingly using it...

**A NEW YORK TIMES NOTABLE BOOK • NEW YORK TIMES EDITORS’ CHOICE • An “elegantly argued and exuberantly narrated” (The New York Times Book Review) look at the building of social movements—from the 1600s to the present—and how current technology is undermining them“A bravura work of scholarship and reporting, featuring amazing individuals and dramatic events from seventeenth-century France to Rome, Moscow, Cairo, and contemporary Minneapolis.”—Louis Menand...

With a new introduction by Adi Ophir: An early and fierce critique of Zionism from a Jewish child of Palestine who argued against nationalism and injustice.Born in 1893, Moshe Menuhin was part of the inaugural class to attend the first Zionist high school in Palestine, the Herzliya gymnasium in Tel Aviv. He had grown up in a Hasidic home, but eventually rejected orthodoxy while remaining dedicated to Judaism.As a witness to the evolution of Israel, Menuhin g...

A disturbing chronicle of the US government's mistreatment of American soldiers and veterans throughout history, with a new introduction by Charles Sheehan-MilesTime and time again, the sacrifices made by veterans and their families have been repaid with scorn, discrimination, lack of health services, scant financial compensation, and other indignities. This injustice dates back as far as the American Revolution, when troops came home penniless and without prospects...

The author of Sparta: Rise of a Warrior Nation continues his revealing history of the Ancient Greek city-state in this chronicle of its decline and defeat.Universally admired in 479 BC, the Spartans became masters of the Greek world by 402 BC, only for their state to collapse in the next generation. What went wrong? Was the fall of Sparta inevitable? In Sparta: Fall of a Warrior Nation, Philip Matyszak examines the political blunders and failures ...

A noted linguist examines extinct languages, from Egyptian hieroglyphs to the mysteries of as-yet undeciphered writings, in this scholarly work.While certain ancient languages were passed down continuously through the ages, many others were ignored for centuries. When scholars began to decipher these extinct languages in the early nineteenth century, they uncovered previously inaccessible riches of knowledge and history. Yet much work remains to be done on undeciphe...

A tale of cave bears and comet strikes and a hundred million years of history by the bestselling author of Here on Earth: "Marvelous."— Publishers Weekly (starred review)In Europe: A Natural History, world-renowned scientist, explorer, and conservationist Tim Flannery applies the eloquent interdisciplinary approach he used in his ecological histories of Australia and North America to the story of Europe. He begins 100 million years ago, wh...