Question

Find
the value of
cos²28 - sin²62​

Answer 1

Answer:

value of cos²28 - sin²62 is 0

Answer 2

Answer:

$\sin(a) = \cos(90 - a)$

Step-by-step explanation:

cos^2 28 - sin^2 62

=(cos28 + sin62)(cos28 - sin 62)

=>[cos(90-62)+sin62][cos(90-62) - sin62]

=(sin62+sin62)(sin62 - sin62)

=(2sin62)(0)

=0

Hence the answer is 0.