Q19 of 44 Page 79

Prove that-





∴LHS =







= RHS


∴ LHS = RHS


∴


Hence, Proved


More from this chapter

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17

Prove that-

2(cos245° + tan260°) – 6(sin245° – tan230°) = 6

 18

Prove that-

(sec230° + cosec245°) (2cos 60° + sin 90° + tan 45°) = 10

 20

Prove that-

cos20° – 2 cot230° + 3 cosec290° = 2(sec245° – tan260°)

 21

If x = 30°, then prove that

sin3x = 3sinx – 4 sin3x