Question

cos 45 into cos 30 + sin 45 into sin 30​

Answer 1

Answer:

cos 45×cos 30 +sin45 ×sin 30

1/√2×√3/2. + 1/√2× 1/2

√3/2√2 +1/2√2

(√3+1)/(2√2) or 0.965

Step-by-step explanation:

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Answer 2

Answer:

1/_/2 * _/3/2 + 1 /_/2 * _/3/2

=_/3/2_/2 + _/3/2_/2

= 2_/3 / 2_/2

=_/3 / _/2