- If A+B+C=180,prove that: 1 + cosA.cosB.cosC = cosA.sinB.sinC + cosB.sinC.sinA + cosC.sinA.sinB?

Discover Questions

Thanks Sam, but I had already thought of that but I don't know how to do it! (I have a new computer - which I hate!)? Why we measure power factor in physics? How does bond angle in a molecule depends on bond polarity and bond length? Take example of ammonia and methane.? X and y are positive integers. then x/y + y/x is
always >2
always >=2
sometimes =2
always <2
sometimes <2? How many test can a single swab check for?