• Draw a trigonometry table.
• In a right angled triangle, if angle A is acute and cot A= 4/3 ; find the remaining trigonometrical ratios.
Answers
1 . TROGNOMETRY TABLE
Angle A 0° 30° 45° 60° 90°
sin A 0 1/2 1/√2 √3/2 1
cos A 1 √3/2 1/√2 1/2 0
tanA 0 1/√3 1 √3 ----
cosec A ---- 2 √2 2/√3 1
sec A 1 2/√3 √2 2 ---
cot A --- √3 1 1/√3 0
2. cot A = 4/3 B/P
By Pythagoras Theorem find Hypotenuse
√4sq + √3 sq
√16 sq +√9 sq
√25 cm
Hypotenuse = 5cm
SIN A = 3/5
COS A = 4/5
TAN A = 3/4
SEC A = 5/4
COSEC A = 5/3
HOPE IT HELPS YOU !!!
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