Question

(iv) 2 sin? 30° - 3 cos 45º + tan? 60°
00​

Answer 1

sin 30 = 1/2

cos 45 = 1/root 2

tan 60 = root3

2 sin^2 30 - 3 cos^2 45 + tan ^2 60

= 2 ( 1/2 )^2 - 3 ( 1/root2 )^2 + ( root3 )^2

= 2 × 1/4 - 3 × 1/2 + 3

= 1/2 - 3/2 + 3

= - 2/2 + 3

= - 1 + 3

= 2

So 2sin^2 30 - 3cos^2 45 + tan^2 60 = 2

Hope it helps you ..!!

✌

Answer 2

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