Question

Question 15 The proper angle for a ladder is about 75 from the ground. Suppose you have a 4 foot ladder. How high can it reach? A HHHHHH feet Show your work on paper and upload. Choose File No file chosen Question 16 Solve the triangle ABC if b = 127, c = 160, ZB = 40" a LA- degrees degrees Assume LA is opposite side a, ZB is opposite side b, and ZC is opposite side State the law that you used. Edit Insert Formats BIX EI 3 IEE Type here to search

Answer 1

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(Sisi Given tooth h LA Angle between geomed and ladder, = 75° Length of Ladder, = 4 foot (AS) 75° A - Now we have to find height (h) =? Now , Sin A = Perpendicular By triangular Hypotenous Identity Sin 75° h BL AB 4 h=445 in 75 ha 4x0.965 Th= 3.86 feet : It can reach upto 3.86 feet B Question 16 - Given triangle ABC, b = 127 C160, LB:1100 Now, By Law of sin es a b 드 Sin A SinB Sinc Now b, c and LB is given if . is. Sino sinc A b b 127 . 160 sinc . Sin 40 160x sinuo = 102.87 : Sinc =0,80 98 127 127

LC= Sin' (0.8098) LC = 540 Now LA + LB + LC = 180 LA + 40° +54° = 180 LA = 86° 11 a Now comparing SinB sin a 127 Sin 40° Sin 86. a = 127x Sin 86 Sineu - $ 27x0.997 0.64 3 a = 197.1 a=197 o o 0 86 and cca 54 LA=