How would I verify questions, such as..
sin x = sin (360° +x)
cotA * sec˛A * sin˛A = tan A
(1 + sinA * cosA) (sinA - cosA) = sinłA - cosłA
cscA = (secA + tanA) / (secA - cosA + tanA)
Consider the RHS
and use the addition formula for sine
can you continue?
Consider the LHScotA * sec˛A * sin˛A = tan A
change to
change to
can you continue?
Consider the RHS
(1 + sinA * cosA) (sinA - cosA) = sinłA - cosłA
use the formula for the difference of two cubes on to expand it
difference of two cubes formula:
can you continue?
Consider the right hand sidecscA = (secA + tanA) / (secA - cosA + tanA)
change to
change to
then combine all the fractions and simplify as much as possible
can you continue?