MEDIUM
9th ICSE
IMPORTANT
Earn 100

If 4cos2x=3 and x is an acute angle; find the value of : cos3x.

50% studentsanswered this correctly

Important Questions on Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]

EASY
9th ICSE
IMPORTANT

In ΔABC,B=90°,AB=y units, BC=3 units, AC=2 units and angle A=x°, find sinx°

MEDIUM
9th ICSE
IMPORTANT

In ΔABC,B=90°,AB=y units, BC=3 units, AC=2 units and angle A=x°, find x°

MEDIUM
9th ICSE
IMPORTANT

In ΔABC,B=90°,AB=y units, BC=3 units, AC=2 units and angle A=x°, find tanx°

MEDIUM
9th ICSE
IMPORTANT

In ΔABC,B=90°,AB=y units, BC=3 units, AC=2 units and angle A=x°, use cosx° to find the value of y.