Question

निम्नलिखित के मान ज्ञात कीजिए
(i) sin 30 + cos 60
(ii) sin2 45° + cos2 45°
(iii) sin 30 + cos 60 - tan 45°
(iv) tan 60 x cos 30

Answer 1

(i) Sin 30° + cos 60°

= 1/2 + 1/2

= 2/2

= 2

(ii) sin^2 45° + cos^2 45°

= (1/Root2) ^2 + (1/root2) ^2

= 1/2 + 1/2

=2/2

=1

(iii) sin 30 + cos 60 - tan 45

= 1/2 + 1/2 - 1

= 2/2 - 1

= 1-1

= 0

(iv) tan 60 × cos 30

= root 3 × root 3/2

= 3/2

That's all you require.

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