Question

6. 2c0s 60° + 3sin 45° - 3sin 30° +2cos 90°
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Answer 1

Brainly.in

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anitamarneanita5403

06.02.2019

Math

Secondary School

+10 pts

Answered

Evaluate: 2cos^2 60 + 3 sin^2 45 - 3sin^2 30 + 2 cos^2 90

2

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Answers

MarkAsBrainliest Genius

Answer :

Now,

2 cos²60° + 3 sin²45° - 3 sin²30° + 2 cos²90°

= 2 ( ½ )² + 3 ( 1/√2 )² - 3 ( ½ )² + 2 ( 0 )²

= 2 ( ¼ ) + 3 ( ½ ) - 3 ( ¼ ) + 0

= ½ + 3/2 - 3/4

= ( 2 + 6 - 3 ) / 4

= 5/4

Answer 2

Answer:

answer for this question is-1+3√2/2

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