2 tan square 45 degree + cos square 30 degree -sin square 60 degree?

1 Answer
May 6, 2018

# 2 tan^2 45^circ + cos ^2 30^circ - sin ^2 60^circ =2#

Explanation:

Will they ever ask questions that aren't 45/45/90 or 30/60/90?

# 2 tan^2 45^circ + cos ^2 30^circ - sin ^2 60^circ #

# = 2 (1)^2 + cos^2 30^circ - cos ^2 (90^circ - 60^circ) #

#= 2#