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Let AB be the building of height ‘h’ and BC be the hoarding pole of height 12 m. Let θ be the angle of elevation as seen by the person at a distance of ‘x’ m and ‘x + 4 √ 3‘ m. In Δ DAB, tan θ = h/x (i) In Δ EAC, tan θ = (h + 12)/ (x + 4 √ 3) (ii) From (i) and (ii) h/x = (h + 12)/ (x + 4 √ 3) ⇒ hx + 4 √ 3h = hx +12x ⇒ h/x = 12/ 4 √ 3 = √ 3 ⇒ tan θ = h/x = √ 3 = tan 60° ⇒ θ = 60°
Which bean is used for extraction of gum?
Salmonellosis involves:
Which of the following are used to prevent germination of fungal spores?
Penicillin is a
What are the signs and symptoms of Fluorosis?
Options:
1. Genu valgum disease
2. Mottled Teeth
3. Lathyrism
4. Conjunctival Xerosis
Which of the following Additives are used in the manufacture of cheese?
Options:
1. Propionic acid
2. Calcium chloride
3. So...
Main composition of synthetic milk is
FSSAI's limit for pesticide residue in packaged water is:
Propionic acid and its salts are used in ______ making.
The chemical name of vitamin B6 is