Answer:
742.21m
Explanation
The given diagram is a right triangle. To get the side OP, we will use the SOH, CAH TOA identity
OP is the opposite side
OQ is the adjacent = 362m
Using TOA
Tan theta = opposite/adjacent
Tan 64 = OP/362
Cross multiply
OP = 362 tan644
OP = 362(2.05)
OP = 742.21m
Hence the distance OP across the river is 742.21m
