CBSE Class 10 - Trigonometrical Ratios Videos

• cos80÷ sin10+cos59• cosec31
• ABCD is a rectangle in which diagonal AC is equals to 17 cm angle BCA is equals to thitha and sin theta is equals to 8/17 find the area of rectangle ABCDE (ii) the perimeter of rectangle ABCD
• ?1+sin A/?1-sin A
• from the top of your vertical building of 350 m height on a level ground the angle of depression on of an object on the same ground is observed to be 60 degree find the distance of the object from the foot of the building
• find the value of cos20 if 2sin20 is root 3
• 6. A is an acute angle in right triangle, right angled at B then value of (sinA + CosA) is ( a) Greater than (b) less than 1 (c) equal to 1 (d) depends on value of A
• solution
  
• Q1. Ina DABC, LB=90^{\circ} If AB=2cm and AC=3cm Find Sin A.
• if cos teta = 24/25 then write the value of sec teta
• if theta is an acute angle and sin theta = cos theta. then find the value of 3 tan² theta + 2 sin² theta +cos² theta - 1

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