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(b) Calculate the area of this piece of land. 7. Solve for x in 2 Cos2x0 = 0.6000 00≤ x ≤ 3600. 8. Wangechi whose eye level is 182cm tall observed the angle of elevation to the top of her house to be 32ºfrom her eye level at point A. she walks 20m towards the house on a straight line to a point B at which point she observes the angle of elevation to the top of the building to the 40º. Calculate, correct to 2 decimal places the ; a)distance of A from the house b) The height of the house 9. Given that cos A = 5/13and angle A is acute, find the value of:- 2 tan A + 3 sin A 10. Given that tan 5° = 3 + 5, without using tables or a calculator, determine tan 25°, leaving your answer in the form a + b c 11. A student whose eye level is 182cm from the ground observed the top of their house at an angle of elevation of 32oat point A. She walked for 20m towards the house along a straight road to a point B, where she observed the top of the building again at an angle of elevation of 40o. Calculate correct to 2 decimal places the:- (a) Distance of Afrom the house (b) The height of the house
12. Given that tan x= 5, find the value of the following without using mathematical tables or calculator: 12 (a) Cos x (b) Sin2(90-x) 13. If tan θ =8/15, find the value of Sinθ - Cosθwithout using a calculator or table Cosθ + Sinθ