Question

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Answer 1

Answer:

AD^2 = 26^2 - 10^2

= 676 - 100

AD = 24

BD = BC - CD

= 42 - 10

= 32

AB^2 = BD^2 + AD^2

= 576 + 1024

AB = 40

(i) cot x = AD/CD

= 24/10

= 12/5

(ii) 1/sin^2y - 1/tan^2y = AB^2/AD^2 - BD^2/AD^2

= 1600/576 - 1024/576

= 1

(iii) 6/cos x - 5/cos y + 8tan y = 6×26/24 -5×40/32 + 8×24/32

= 1/4 +24/4

= 25/4

Answer 2

Answer:

hope the explanation in the pic helps you

Step-by-step explanation:

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