👉 Learn how to evaluate inverse trigonometric functions. The inverse trigonometric functions are used to obtain theta, the angle which yielded the trigonometric function value. It is usually helpful ...

👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric ...

PIMA COUNTY, Ariz. -- The search for 84-year-old Nancy Guthrie, the mother of "Today" host Savannah Guthrie, began after she was abducted from her home near Tucson, Arizona, on Sunday, Feb. 1, ...

A man who is 5'9" to 5'10" tall and was carrying an Ozark Trail backpack was seen on video from Nancy's Guthrie's home the morning she went missing, FBI officials said. The FBI today that based on ...

Add Yahoo as a preferred source to see more of our stories on Google. The search is intensifying for 84-year-old Nancy Guthrie, the mother of "Today" show host Savannah Guthrie, who investigators say ...

A pair of black gloves recovered near Nancy Guthrie’s Tucson-area home is being tested for DNA, marking the latest development in the investigation into her disappearance. Authorities said the gloves ...

Nancy Guthrie remains missing despite several major updates in the case. The 84-year-old mother of "Today" show co-host Savannah Guthrie was last seen on the evening of Jan. 31. She was believed to ...

The search for "Today" show host Savannah Guthrie's mother, Nancy, continues in southern Arizona. The 84-year-old was last seen on Jan. 31 at her home in the Catalina Foothills, a community north of ...

TUCSON, Ariz. (KVOA) - New images and video footage have emerged in the disappearance of Nancy Guthrie, offering potential leads in the ongoing investigation. Following the release of footage, a man ...

Anna Schecter is the senior coordinating producer for CBS News and Stations' Crime and Public Safety Unit, based in New York. Senior producer, CBS News Investigative Unit Pat Milton, an award-winning ...

Authorities are taking DNA samples from hired workers around Nancy Guthrie’s Arizona home as the desperate search for Savannah’s mom continues. This revelation indicates that DNA was possibly found ...