Find the value of sin (arc cos15/17)
A). 8/11
B). 8/15
C). 8/17
D). 8/19
3. If [secA + tanA] / [secA – tanA] = 3, then find the value of [cosec2A + cot2A].
6. If $tan\theta + cot\theta$ = 5, then $tan^{2}\theta + cot^{2}\theta$ is
7. The value of ($\sec^{2}$45o - $\cot^{2}$45o) - ($\sin^{2}$30o + $\sin^{2}$60o) is
8. What is the simplified value of (cosec A + sin A)(cosec A - sin A)?
9. If cos 55° and sin 55° = 0.8 each then answer of cos 125° + 5 sin 55° is