sina = cosa
divide by cosa and you have
tana = 1
a = 45
sin^2 = 3/4
sina = ±√3/2
a = 60,120
tan^2 = 1/3
tana = ±1/√3
a = 30,150
Looks like you need to review your "standard" angles where the values are well known, and the various signs in the quadrants.
Find a if a is between 0 degrees and 180 degrees, and:
a. Sin a = cos a
b. sin^2 = 3/4
c. tan^2 = 1/3
I have no clue on where to start any help would be much appreciated.
2 answers
yeah ive just recently learnt about the unit circle and all that other stuff but thanks
2 answers