Evaluate the following :(i) sin 49°cos 41°2+cos 41°sin 49°2(ii) cos 48° − sin 42°(iii) cot 40°tan 50°-12 cos 35°sin 55°(iv) sin 27°cos 63°2-cos 63°sin 27°2(v) tan 35°cot 55°+cot 78°tan 12°-1(vi) sec 70°cosec 20°+sin 59°cos 31°(vii) cosec 31° − sec 59°(viii) (sin 72° + cos 18°) (sin 72° − cos 18°)(ix) sin 35° sin 55° − cos 35° cos 55°(x) tan 48° tan 23° tan 42° tan 67°(xi) sec50° sin 40° + cos40° cosec 50°

Evaluate the following :(i) sin 49°cos 41°2+cos 41°sin 49°2(ii) co

1.	Evaluate the following :(i) sin 49°cos 41°2+cos 41°sin 49°2(ii) cos 48° − sin 42°(iii) cot 40°tan 50°-12 cos 35°sin 55°(iv) sin 27°cos 63°2-cos 63°sin 27°2(v) tan 35°cot 55°+cot 78°tan 12°-1(vi) sec 70°cosec 20°+sin 59°cos 31°(vii) cosec 31° − sec 59°(viii) (sin 72° + cos 18°) (sin 72° − cos 18°)(ix) sin 35° sin 55° − cos 35° cos 55°(x) tan 48° tan 23° tan 42° tan 67°(xi) sec50° sin 40° + cos40° cosec 50°
Answer» Evaluate the following : (i) ${(\frac{\sin 49 °}{\cos 41 °})}^{2} + {(\frac{\cos 41 °}{\sin 49 °})}^{2}$ (ii) cos 48° − sin 42° (iii) $\frac{\cot 40 °}{\tan 50 °} - \frac{1}{2} (\frac{\cos 35 °}{\sin 55 °})$ (iv) ${(\frac{\sin 27 °}{\cos 63 °})}^{2} - {(\frac{\cos 63 °}{\sin 27 °})}^{2}$ (v) $\frac{\tan 35 °}{\cot 55 °} + \frac{\cot 78 °}{\tan 12 °} - 1$ (vi) $\frac{\sec 70 °}{cosec 20 °} + \frac{\sin 59 °}{\cos 31 °}$ (vii) cosec 31° − sec 59° (viii) (sin 72° + cos 18°) (sin 72° − cos 18°) (ix) sin 35° sin 55° − cos 35° cos 55° (x) tan 48° tan 23° tan 42° tan 67° (xi) sec50° sin 40° + cos40° cosec 50°

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