Question

prove :cos 40⁰ upon sin 50⁰ + sin 20⁰ upon cos 70⁰- tan 75 × tan 15 = 1

Answer 1

Step-by-step explanation:

began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers