Solve the remaining side of the spherical triangle whose given parts are A = B = 80° and a = b = 89°.
A). 158°12
B). 162°21
C). 168°31
D). 172°12
1. What is the simplified value of$ (cosec^{4} A - cot^{2} A) - (cot^{4} A + cosec^{2} A)$ ?
7. $\sqrt{\frac{1+sin\theta}{1-sin\theta}}+\sqrt{\frac{1-sin\theta}{1+sin\theta}}$ is equal to
8. If sinA = 3/5 and 0 < A < π/2 and 27cotA.cos2A = psin2A, then find the value of p.