Question

2sin 30 +cos teta + 3 sin 90

Answer 1

Answer:

4 + cos Θ

Step-by-step explanation:

2 sin 30° + cos Θ  + 3 sin 90° = 2 x 1/2 + cos Θ + 3 x 1

                                                = 1 +  cos Θ + 3

                                                = 4 + cos Θ

For Values Of sin 90° and  sin 30°,i.e., 1 and 1/2 respectively we use trigonometric tables. Please Go through all the values of trigonometric ratios given in your book or simply refer to NCERT Mathematics Book.